In A1, we don't usually learn the word '퇴적' because it is a bit scientific. Instead, we learn '쌓이다' which means 'to be piled up.' For example, '눈이 쌓여요' (Snow is piling up). '퇴적' is like a very special, serious version of '쌓이다' used for sand or mud in a river. Think of it like Lego blocks being put on top of each other, but the blocks are tiny pieces of dirt. You will mostly see this word in science books or on the news when they talk about the earth. Even if you don't use it now, knowing it means 'piling up in nature' is a great start!
At the A2 level, you might encounter '퇴적' in simple nature documentaries or elementary science materials. It's a noun that describes how things like sand or soil settle at the bottom of water or on the ground. You can remember it by the verb form '퇴적되다.' For example, '강가에 모래가 퇴적돼요' (Sand is deposited by the riverside). This is more specific than '쌓이다.' While '쌓이다' can be used for books, clothes, or snow, '퇴적' is almost always for earth materials. It's a good word to know if you like talking about the environment or traveling to famous natural places like beaches and mountains.
B1 learners should start using '퇴적' to describe geographical processes. At this level, you understand that '퇴적' is the technical term for sedimentation. It's an important part of the '침식 (erosion) - 운반 (transport) - 퇴적 (deposition)' cycle. You should be able to use it in compound nouns like '퇴적물' (sediment) or '퇴적층' (sedimentary layer). For example, '이 지역은 퇴적층이 잘 발달되어 있습니다' (This area has well-developed sedimentary layers). You might also hear it in news reports about river management or environmental issues. Using '퇴적' instead of '쌓이다' makes your Korean sound more professional and precise when discussing nature.
For B2 learners, '퇴적' is a standard part of your academic and formal vocabulary. You should understand its nuances compared to similar words like '침전' (chemical precipitation) and '축적' (abstract accumulation). You can use '퇴적' metaphorically in writing to describe the 'layering' of history or time, although this is more common in literature. You should also be familiar with the causative form '퇴적시키다' (to cause to deposit). For example, '흐르는 물은 무거운 입자를 먼저 퇴적시킨다' (Flowing water causes heavy particles to deposit first). At this level, you are expected to understand complex sentences in news articles or academic texts that use this word to explain environmental changes or geological history.
At the C1 level, you should have a deep understanding of '퇴적' in various specialized contexts. This includes its use in oceanography, geology, and environmental engineering. You should be able to discuss the implications of '퇴적 작용' (sedimentation process) on ecosystem health or infrastructure stability. You might use the word in an essay to describe the 'sedimentation of cultural influences' over centuries in a particular region. Your understanding should extend to related technical terms like '퇴적암' (sedimentary rock) and '퇴적 분지' (sedimentary basin). You can distinguish between the physical process of '퇴적' and the chemical process of '침전' with ease, and you use these terms accurately in professional discussions.
C2 proficiency involves mastering '퇴적' in its most abstract and sophisticated forms. You can appreciate its use in high-level literature where it might describe the 'sedimentation of human sorrow' or the 'geological layers of a nation's collective memory.' You are comfortable reading peer-reviewed journals in Korean that discuss '퇴적 속도' (sedimentation rate) or '퇴적 환경' (sedimentary environment). You can lead discussions on environmental policy regarding '퇴적물 오염' (sediment pollution) and propose solutions using precise terminology. At this level, '퇴적' is not just a word for sand; it is a conceptual tool used to describe any slow, layering process that shapes the physical or metaphorical world.

퇴적 في 30 ثانية

  • 퇴적 means sedimentation or deposition in nature.
  • It is a formal noun used for physical materials like sand and soil.
  • Commonly paired with '되다' (to be deposited) or '작용' (action).
  • Essential for discussing geography, geology, and environmental science.

The Korean noun 퇴적 (toe-jeok) refers to the natural phenomenon where materials like sand, mud, gravel, or organic matter settle and accumulate in a specific location over time. While it is fundamentally a geological term used to describe the formation of sedimentary rocks or the building of river deltas, its conceptual application extends to any situation where layers of something are built up by gradual addition. When you imagine a river carrying silt from the mountains and dropping it at the mouth of the sea to create new land, you are visualizing the core essence of 퇴적. This word is essential for anyone discussing geography, environmental science, or the structural history of the earth. It captures the patient, relentless work of nature in redistributing mass across the planet's surface.

Geological Context
The primary use of 퇴적 is in earth sciences. It describes the phase of the rock cycle that follows erosion and transport. Once the energy of the transporting medium (like a fast-moving stream) decreases, it can no longer carry its load, leading to deposition.
Scientific Precision
In laboratory or industrial settings, 퇴적 might refer to the settling of particles in a liquid, though '침전' (precipitation/settling) is often used for chemical contexts. 퇴적 implies a more physical, mechanical accumulation of solids.
Abstract Usage
Occasionally, you may see 퇴적 used metaphorically to describe the accumulation of time, history, or even emotions, though '축적' (accumulation) is more common for non-physical things. However, 퇴적 carries a specific nuance of 'layering' that other words lack.

강 하구에는 오랜 시간 동안 흙과 모래의 퇴적 작용이 일어났다. (At the river mouth, the process of sedimentation of soil and sand took place over a long time.)

Understanding 퇴적 requires looking at the environment. It is not a sudden event like an explosion, but a slow, cumulative process. For example, when wind blows across a desert and creates dunes, the sand is undergoing 퇴적. Similarly, when a glacier melts and leaves behind piles of rock (moraines), that is also a form of 퇴적. The word is composed of the Hanja characters 堆 (to pile up) and 積 (to accumulate), which perfectly describes the visual of layers stacking upon one another. In everyday conversation, you might not use it to describe a messy room (that would be '쌓이다'), but you would definitely use it when watching a documentary about the Grand Canyon or explaining why a harbor needs dredging to remove silt.

지층의 퇴적 순서를 분석하면 과거의 기후를 알 수 있다. (By analyzing the sequence of sedimentation in the strata, we can know the past climate.)

Furthermore, 퇴적 is a key concept in environmental protection. When rivers are polluted, the pollutants often undergo 퇴적 at the bottom of lakes or oceans, creating 'sediment pollution.' Engineers must study the rate of 퇴적 to prevent dams from filling up with silt, which would reduce their water storage capacity. Thus, the word is as much about engineering and environmental management as it is about pure geology. It represents the transition from movement to stillness for materials being transported by the elements.

바람에 의해 날려온 먼지가 창틀에 퇴적되었다. (Dust blown by the wind was deposited on the window frame.)

Using 퇴적 correctly involves understanding its grammatical role as a noun and its common verbal form, 퇴적되다 (to be deposited/sedimented). Because it is a technical and formal term, it is frequently paired with other nouns to create compound terms like 퇴적물 (sediment), 퇴적층 (sedimentary layer), and 퇴적암 (sedimentary rock). In most sentences, 퇴적 acts as the subject or the object of a process described in scientific or descriptive reports.

As a Subject with '되다'
Since 퇴적 is a passive process (the sand doesn't decide to settle; the water stops carrying it), the verb 퇴적되다 is extremely common. Example: '모래가 해안가에 퇴적되었다.' (Sand was deposited on the coast.)
In Compound Nouns
You will often see it modifying other nouns to describe specific things. 퇴적 작용 (sedimentation action/process) is the standard way to refer to the geological mechanism itself.
Metaphorical Use
In literature, it can describe the 'layering' of emotions or time. '세월의 퇴적' refers to the accumulation of years, suggesting that each year leaves a physical or spiritual mark like a layer of earth.

홍수가 지나간 자리에는 두꺼운 진흙층이 퇴적되어 있었다. (After the flood passed, a thick layer of mud was deposited in its place.)

When writing about 퇴적, pay attention to the medium of transport. Is it water (물), wind (바람), or ice (빙하)? These are often mentioned as the cause. For instance, '빙하에 의한 퇴적' (sedimentation by glaciers) or '해류에 의한 퇴적' (sedimentation by ocean currents). This specificity is what marks B1 and B2 level proficiency in Korean—moving beyond simple verbs like '쌓이다' (to be piled) to specific terms like 퇴적.

댐 건설로 인해 하류의 퇴적량이 급격히 감소했다. (Due to dam construction, the amount of sedimentation downstream decreased sharply.)

In academic writing, 퇴적 is frequently contrasted with 침식 (erosion). A sentence might look like: '이 지형은 침식퇴적의 반복을 통해 형성되었다.' (This terrain was formed through the repetition of erosion and sedimentation.) This shows a dynamic understanding of geography. You should also note that 퇴적 is usually used for natural materials. If you are talking about garbage piling up, '투기' (dumping) or '방치' (neglect/leaving) might be more appropriate, unless the garbage is literally forming a geological-like layer over decades.

화석은 생물의 유해가 지층에 퇴적되면서 만들어진다. (Fossils are made as the remains of organisms are deposited in the strata.)

While 퇴적 might seem like a word found only in dusty textbooks, it actually appears in several common real-life scenarios in Korea. If you watch the evening news during the rainy season (장마), you will almost certainly hear weathercasters or environmental experts discuss 퇴적. They might talk about how heavy rains have caused silt to 퇴적 in urban drainage systems, leading to flooding. Or they might report on the '녹조' (green algae) and how dead algae 퇴적 on the riverbed, affecting water quality.

News and Media
News reports on natural disasters, coastal erosion, or the health of the Four Major Rivers often use 퇴적. It provides a professional and objective tone to the reporting.
Educational Settings
In Korean middle and high schools, '과학' (Science) and '사회' (Social Studies/Geography) classes are where students first master this word. It is a staple of the CSAT (수능) exam in the Earth Science section.
Museums and Parks
If you visit a national park like Byeonsan-bando or a natural history museum in Korea, the information plaques explaining rock formations (like the famous Chaeseokgang Cliffs) will use 퇴적 repeatedly to explain how the layers were formed over millions of years.

전문가들은 하천 바닥의 퇴적물을 준설해야 한다고 주장합니다. (Experts argue that the sediment on the riverbed must be dredged.)

Another place you'll encounter 퇴적 is in documentaries. Korean broadcasters like KBS or EBS often produce high-quality nature documentaries. Narrators use 퇴적 to describe the majestic formation of mountain ranges or the slow death of a lake. In these contexts, the word is often spoken with a sense of awe or clinical precision. Even in the beauty industry or health segments, you might hear about '노폐물 퇴적' (accumulation of waste products) in the skin or blood vessels, although '축적' is more common there, 퇴적 is used to emphasize a physical layer of 'gunk' that has settled.

이곳은 수만 년 동안의 퇴적 과정이 고스란히 남아 있는 곳입니다. (This is a place where the sedimentation process of tens of thousands of years remains intact.)

Finally, in urban planning discussions in Korea, 퇴적 is used when discussing harbor maintenance. Busan, the largest port in Korea, constantly deals with the 퇴적 of silt in its shipping lanes. Hearing about '퇴적물 처리' (sediment disposal) is common in local news regarding maritime logistics. This shows that the word isn't just about ancient rocks—it's about the functioning of modern infrastructure as well.

항구 내의 퇴적 현상은 선박의 안전한 입출항을 방해한다. (The phenomenon of sedimentation within the harbor interferes with the safe entry and exit of ships.)

Learning 퇴적 involves navigating several similar-sounding or similar-meaning words. The most frequent mistake for English speakers is using 퇴적 for any kind of 'pile up' or 'accumulation.' Korean has specific words for different types of accumulation, and using the wrong one can make a sentence sound overly scientific or just plain weird. For instance, if you say your laundry is undergoing 퇴적, people will think you are describing your clothes turning into a geological formation over centuries.

Confusing with '축적' (Accumulation)
축적 is used for abstract things like wealth, knowledge, fatigue, or experience. While 'sedimentation' is a physical layering, 'accumulation' (축적) is a general increase in quantity. You '축적' money, but sand '퇴적's.
Confusing with '침전' (Precipitation/Settling)
침전 is more chemical or laboratory-focused. It refers to a solid separating from a liquid solution. 퇴적 is broader and usually involves natural transport by wind or water on a larger scale.
Confusing with '쌓이다' (To be piled up)
쌓이다 is the general, everyday verb. If snow falls on the ground, use '눈이 쌓이다.' Using 퇴적 for snow sounds like a weather report or a scientific study of glacial formation.

[Wrong]: 지식을 머릿속에 퇴적했다. (I sedimented knowledge in my head.)
[Right]: 지식을 머릿속에 축적했다. (I accumulated knowledge in my head.)

Another mistake is the direction of the process. 퇴적 is the result of gravity and the loss of energy in a transporting medium. It is not the same as '압축' (compression). While 퇴적 often leads to compression as layers get heavy, they are distinct steps. Learners also sometimes forget that 퇴적 is a noun. To use it as a verb, you must add -되다 (passive) or -시키다 (active/causative). Simply saying '모래가 퇴적했다' is grammatically awkward; '모래가 퇴적되었다' is much more natural.

[Wrong]: 설탕이 물 밑에 퇴적되었다. (Sugar sedimented at the bottom of the water.)
[Right]: 설탕이 물 밑에 침전되었다. (Sugar precipitated at the bottom of the water.)

Lastly, be careful with the Hanja. 퇴적 (堆積) is different from 퇴출 (退出) (expulsion/withdrawal) or 퇴화 (退化) (degeneration). Because many '퇴' words exist in Korean, it's easy to mix them up if you're only going by sound. Always associate 퇴적 with 'stacking' (the '적' in accumulation).

To truly master 퇴적, you must see where it sits among its synonyms and related terms. Korean is rich in vocabulary that describes 'gathering' and 'piling,' and choosing the right one depends on the material, the scale, and the formality of the situation. Here is a comparison to help you distinguish 퇴적 from its neighbors.

퇴적 (堆積) vs. 축적 (蓄積)
퇴적 is for physical, earth-like materials settling into layers (sand, mud). 축적 is for amassing resources, data, or qualities (wealth, stress, experience). You can't have a 'wealth sedimentation' in Korean.
퇴적 (堆積) vs. 침전 (沈澱)
침전 is specifically for particles settling out of a liquid, often used in chemistry or water treatment. While a river's silt 퇴적s to form a delta, the salt in a beaker 침전s. 침전 focuses on the separation from the liquid.
퇴적 (堆積) vs. 적재 (積載)
적재 refers to loading cargo onto a ship, truck, or plane. It is an intentional, human-driven action. 퇴적 is usually a natural, environmental process.

가장 쉬운 표현은 '쌓이다'이지만, 지질학적 맥락에서는 반드시 퇴적을 써야 합니다. (The easiest expression is '쌓이다', but in geological contexts, you must use '퇴적'.)

There are also more poetic or specific terms. For example, 누적 (累積) is used for cumulative totals, like '누적 조회수' (cumulative views) on a YouTube video. You wouldn't use 퇴적 there because there is no physical layering involved. Another related word is 응축 (凝縮), which means condensation or concentration, often used for gases turning into liquids or ideas being boiled down into a single point.

강물의 속도가 느려지면 운반하던 물질들이 바닥에 퇴적되기 시작한다. (When the speed of the river water slows down, the materials it was carrying begin to be deposited on the bottom.)

In summary, while there are many ways to say 'piling up' in Korean, 퇴적 is the gold standard for geology and environmental science. It implies a process that is natural, physical, and layered. By distinguishing it from 축적, 침전, 적재, and 누적, you demonstrate a high-level command of Korean nuances.

How Formal Is It?

حقيقة ممتعة

The character 積 (적) is the same '적' found in '면적' (area) and '성적' (grade), all relating to things that can be measured or added up.

دليل النطق

UK /tʰwe.dʑʌk̚/
US /tʰwe.dʑʌk̚/
Equal stress on both syllables.
يتقافى مع
표적 (target) 면적 (area) 성적 (grade) 실적 (performance) 국적 (nationality) 흔적 (trace) 공적 (achievement) 기적 (miracle)
أخطاء شائعة
  • Pronouncing '퇴' as 'toe' (should be 't-hwe').
  • Softening the final 'k' too much.
  • Confusing the 'eo' sound in '적' with an 'o' sound.

مستوى الصعوبة

القراءة 4/5

Common in news and textbooks, requires knowing Hanja-based terms.

الكتابة 5/5

Requires precision to distinguish from synonyms like '축적' or '침전'.

التحدث 3/5

Not used in casual daily speech, but essential for formal discussions.

الاستماع 4/5

Often heard in documentaries and weather/environmental reports.

ماذا تتعلّم بعد ذلك

المتطلبات الأساسية

쌓이다 모래 바닥

تعلّم لاحقاً

침식 운반 지층 화석 준설

متقدم

상동 기관 판 구조론 빙하기 해수면 상승 생태계 파괴

قواعد يجب معرفتها

-되다 (Passive formation)

모래가 퇴적되다.

-시키다 (Causative formation)

물이 흙을 퇴적시키다.

-에 의한 (Due to/By)

바람에 의한 퇴적.

-을 통해 (Through)

퇴적층을 통해 역사를 알다.

-로 인해 (Because of)

퇴적으로 인해 수심이 얕아지다.

أمثلة حسب المستوى

1

강가에 모래가 퇴적되었어요.

Sand was deposited by the river.

Simple past tense of '퇴적되다'.

2

흙이 퇴적되어 섬이 생겼어요.

Soil was deposited and an island was formed.

Using -어서 to show cause and effect.

3

여기에 먼지가 퇴적되었네요.

Dust has been deposited here.

-네요 ending for realization.

4

바닷가에는 조개껍데기가 퇴적돼요.

Shells are deposited on the beach.

Present tense of '퇴적되다'.

5

퇴적은 쌓이는 것을 말해요.

Sedimentation means piling up.

Noun + 은/는 to define a term.

6

돌이 퇴적되어 바위가 돼요.

Stones are deposited and become rocks.

-가 되다 (to become).

7

강물이 흙을 퇴적시켜요.

River water deposits the soil.

Causative form '퇴적시키다'.

8

퇴적 작용은 아주 느려요.

The sedimentation process is very slow.

Descriptive sentence with an adjective.

1

오랜 시간 동안 퇴적이 일어났습니다.

Sedimentation occurred over a long time.

Formal polite style (하십시오체).

2

강 하구에는 퇴적물이 많아요.

There is a lot of sediment at the river mouth.

Using the noun '퇴적물'.

3

바람이 모래를 퇴적시켜 언덕을 만들어요.

The wind deposits sand to create hills.

Subject (바람) + Object (모래) + Verb (퇴적시키다).

4

이곳은 퇴적 작용으로 만들어진 지형입니다.

This is a terrain created by sedimentation.

Noun modifying another noun.

5

호수 바닥에 진흙이 퇴적되고 있어요.

Mud is being deposited on the lake floor.

-고 있다 (progressive tense).

6

퇴적층을 보면 과거를 알 수 있어요.

If you look at the sedimentary layers, you can know the past.

-(으)면 to express a condition.

7

홍수 때문에 많은 흙이 퇴적되었습니다.

A lot of soil was deposited because of the flood.

Noun + 때문에 (because of).

8

퇴적은 지구를 변화시키는 과정 중 하나예요.

Sedimentation is one of the processes that change the Earth.

- 중 하나 (one of...).

1

강물의 흐름이 느려지면 퇴적 작용이 활발해집니다.

When the river flow slows down, sedimentation becomes active.

Conditional phrase with '활발해지다' (to become active).

2

이 암석은 퇴적암의 일종으로 보입니다.

This rock appears to be a type of sedimentary rock.

-의 일종 (a kind of).

3

댐이 건설되면 상류에 퇴적물이 쌓이게 됩니다.

If a dam is built, sediment will end up piling up upstream.

-게 되다 (to eventually happen).

4

삼각주는 강이 운반한 물질의 퇴적으로 형성됩니다.

A delta is formed by the sedimentation of materials carried by the river.

Passive construction with '형성되다'.

5

지층의 퇴적 순서를 통해 연대를 측정할 수 있다.

The age can be measured through the order of sedimentation of the strata.

-를 통해 (through/via).

6

해안가에 모래가 퇴적되어 넓은 백사장이 생겼다.

Sand was deposited on the coast, creating a wide white beach.

Cause and effect in a narrative style.

7

도시의 배수구에 퇴적물이 쌓여 역류가 발생했다.

Sediment piled up in the city's drains, causing backflow.

Compound sentence describing a problem.

8

빙하가 녹으면서 그 자리에 퇴적물이 남았다.

As the glacier melted, sediment was left in its place.

-(으)면서 (while/as).

1

지질학자들은 이 지역의 퇴적 환경을 조사하고 있다.

Geologists are investigating the sedimentary environment of this region.

Use of professional term '퇴적 환경'.

2

오염된 퇴적물이 생태계에 미치는 영향은 매우 큽니다.

The impact of contaminated sediment on the ecosystem is very significant.

-에 미치는 영향 (impact on...).

3

퇴적 작용은 지형의 변화를 일으키는 주요 요인이다.

Sedimentation is a major factor causing changes in terrain.

-는 요인이다 (is a factor that...).

4

강 하구의 퇴적량을 조절하기 위해 준설 작업을 한다.

Dredging is performed to control the amount of sedimentation at the river mouth.

-기 위해 (in order to).

5

이 호수는 수천 년간의 퇴적 기록을 간직하고 있다.

This lake preserves the record of thousands of years of sedimentation.

Metaphorical use of '간직하다' (to cherish/keep).

6

퇴적층 사이에서 발견된 화석은 귀중한 자료가 된다.

Fossils found between sedimentary layers become valuable data.

Noun + 사이에서 (between/among).

7

바람에 의한 퇴적은 사막 지형의 특징 중 하나이다.

Sedimentation by wind is one of the characteristics of desert terrain.

-에 의한 (by/due to).

8

퇴적물이 굳어져서 만들어진 바위를 퇴적암이라고 한다.

Rocks made by sediment hardening are called sedimentary rocks.

-라고 한다 (is called).

1

해양 퇴적물의 분석을 통해 고기후를 복원하려는 시도가 계속되고 있다.

Attempts to reconstruct paleoclimates through the analysis of marine sediments continue.

Advanced term '고기후' (paleoclimate) and '복원' (reconstruction).

2

산업 폐기물의 불법 투기로 인해 하천 바닥에 중금속이 퇴적되었다.

Heavy metals have been deposited on the riverbed due to the illegal dumping of industrial waste.

Complex cause-effect chain with '투기' and '중금속'.

3

퇴적 속도는 강수량과 지표면의 식생 상태에 따라 달라진다.

The rate of sedimentation varies depending on the amount of precipitation and the state of surface vegetation.

-에 따라 달라진다 (varies depending on).

4

이 분지는 거대한 퇴적층으로 덮여 있어 자원 탐사에 유리하다.

This basin is covered with a huge sedimentary layer, making it advantageous for resource exploration.

Geological term '분지' (basin) and '탐사' (exploration).

5

역사학자들은 이 유물이 퇴적층 아래에 묻혀 있었다는 사실에 주목했다.

Historians noted the fact that this artifact was buried beneath the sedimentary layers.

-라는 사실에 주목하다 (pay attention to the fact that...).

6

상류에서의 무분별한 개발은 하류의 퇴적 현상을 가속화시킨다.

Indiscriminate development upstream accelerates the phenomenon of sedimentation downstream.

Causative verb '가속화시키다' (to accelerate).

7

퇴적물의 입자 크기를 분석하면 당시 물의 흐름 속도를 추정할 수 있다.

By analyzing the particle size of the sediment, the flow speed of the water at that time can be estimated.

Hypothetical analysis using '추정하다' (to estimate).

8

댐 건설 이후 퇴적 불균형으로 인해 하천 생태계가 파괴되고 있다.

Since the construction of the dam, the river ecosystem is being destroyed due to sedimentation imbalance.

Compound noun '퇴적 불균형' (sedimentation imbalance).

1

인간의 역사는 끊임없는 망각과 기억의 퇴적물 위에서 구축된다.

Human history is built upon the constant sediment of oblivion and memory.

Highly metaphorical use of '퇴적물' in a philosophical context.

2

심해저 퇴적물은 지구의 수억 년 역사를 담고 있는 거대한 도서관과 같다.

Deep-sea sediments are like a vast library containing hundreds of millions of years of Earth's history.

Simile comparing sediments to a library.

3

기후 변화로 인한 해수면 상승은 연안 퇴적 체계를 근본적으로 뒤흔들고 있다.

Sea-level rise caused by climate change is fundamentally shaking the coastal sedimentation system.

Advanced verb '뒤흔들다' (to shake/upend).

4

퇴적학적 관점에서 볼 때, 이 지형은 매우 특이한 형성 과정을 거쳤다.

From a sedimentological perspective, this terrain underwent a very unusual formation process.

Academic phrase '-적 관점에서 볼 때'.

5

도시 문명의 잔해들이 미래의 지질 시대에는 하나의 퇴적층으로 남을 것이다.

The remnants of urban civilization will remain as a single sedimentary layer in future geological ages.

Future tense with '남을 것이다'.

6

퇴적 분지의 구조적 특징을 파악하는 것은 석유 지질학의 핵심 과제이다.

Understanding the structural characteristics of sedimentary basins is a key task in petroleum geology.

Gerund '-하는 것은' as the subject.

7

미세 플라스틱의 퇴적은 현대 해양 오염의 가장 심각한 양상 중 하나로 꼽힌다.

The deposition of microplastics is considered one of the most serious aspects of modern marine pollution.

-로 꼽히다 (to be counted/considered as).

8

문학적 감수성은 세월의 퇴적 속에 묻힌 진실을 길어 올리는 힘이다.

Literary sensibility is the power to draw up the truth buried within the sedimentation of time.

Abstract and poetic language usage.

المرادفات

침전 축적 쌓임

الأضداد

침식 풍화

تلازمات شائعة

퇴적 작용
퇴적물
퇴적층
퇴적암
퇴적량
퇴적 속도
해양 퇴적물
퇴적 분지
인위적 퇴적
퇴적 환경

العبارات الشائعة

퇴적물이 쌓이다

— Sediment piles up.

강 하구에 퇴적물이 쌓여 배가 다니기 힘들다.

퇴적 작용이 일어나다

— Sedimentation occurs.

이곳은 수천 년간 퇴적 작용이 일어난 곳이다.

퇴적층이 형성되다

— A sedimentary layer is formed.

오랜 세월을 거쳐 퇴적층이 형성되었다.

퇴적물을 준설하다

— To dredge the sediment.

정부는 매년 퇴적물을 준설하고 있다.

퇴적 속도를 측정하다

— To measure the sedimentation rate.

과학자들은 호수의 퇴적 속도를 측정했다.

퇴적암의 특징

— Characteristics of sedimentary rock.

퇴적암의 특징은 층리가 있다는 점이다.

퇴적 환경의 변화

— Changes in the sedimentary environment.

기후 위기는 퇴적 환경의 변화를 초래한다.

퇴적 현상을 관찰하다

— To observe the phenomenon of sedimentation.

아이들은 실험을 통해 퇴적 현상을 관찰했다.

퇴적물이 굳어지다

— Sediment hardens.

퇴적물이 굳어지면 단단한 바위가 된다.

퇴적에 의해 만들어지다

— To be made by sedimentation.

이 평야는 퇴적에 의해 만들어진 비옥한 땅이다.

يُخلط عادةً مع

퇴적 vs 축적

Used for abstract accumulation (wealth, knowledge).

퇴적 vs 침전

Used for chemical/laboratory settling.

퇴적 vs 투기

Used for intentional dumping (garbage).

تعبيرات اصطلاحية

"세월의 퇴적"

— The accumulation of time/years, implying a heavy history.

그의 얼굴에는 세월의 퇴적이 고스란히 담겨 있었다.

Literary
"기억의 퇴적층"

— Layers of memory built up over time.

기억의 퇴적층 깊숙한 곳에서 옛 친구를 떠올렸다.

Poetic
"슬픔이 퇴적되다"

— Sorrow piling up layer by layer.

마음속에 슬픔이 퇴적되어 돌처럼 굳어버렸다.

Literary
"먼지처럼 퇴적된 일상"

— Daily life that has settled like dust (monotony).

먼지처럼 퇴적된 일상에서 벗어나고 싶다.

Literary
"지식의 퇴적"

— The slow, layered building of knowledge.

독서는 지식의 퇴적을 돕는 가장 좋은 방법이다.

Metaphorical
"감정의 퇴적물"

— The leftover 'gunk' or residue of past emotions.

과거 연애의 감정의 퇴적물이 그를 괴롭혔다.

Psychological/Literary
"역사의 퇴적"

— The layering of historical events.

이 도시는 수많은 역사의 퇴적 위에 세워졌다.

Formal
"침묵의 퇴적"

— A long-lasting, heavy silence that has built up.

두 사람 사이에는 차가운 침묵의 퇴적만이 남았다.

Literary
"피로의 퇴적"

— Chronic accumulation of fatigue.

피로의 퇴적으로 인해 그는 결국 쓰러지고 말았다.

Formal
"문화의 퇴적"

— The layering of different cultural influences.

한국 문화는 동양적 가치와 현대적 감각의 퇴적이다.

Academic/Cultural

سهل الخلط

퇴적 vs 축적

Both mean 'buildup.'

퇴적 is for physical earth/layers; 축적 is for resources/abstract things.

경험의 축적 (O) / 경험의 퇴적 (X - unless poetic).

퇴적 vs 침전

Both involve settling at the bottom.

침전 is chemical/liquid separation; 퇴적 is geological/transport-based.

화학 반응 후의 침전물 (O) / 강 하구의 침전물 (Possible, but 퇴적물 is better).

퇴적 vs 누적

Both mean 'adding up.'

누적 is statistical/mathematical; 퇴적 is physical.

누적 점수 (O) / 퇴적 점수 (X).

퇴적 vs 적재

Both involve piling/loading.

적재 is human action (loading cargo); 퇴적 is natural.

트럭에 짐을 적재하다 (O).

퇴적 vs 응축

Both involve gathering into a mass.

응축 is gas to liquid or ideas to a point; 퇴적 is particles settling.

수증기의 응축 (O).

أنماط الجُمل

A2

N이/가 퇴적되다

모래가 퇴적되었다.

B1

N에 의한 퇴적

바람에 의한 퇴적.

B1

퇴적 작용으로 인해 ~

퇴적 작용으로 인해 섬이 생겼다.

B2

N을/를 퇴적시키다

강물이 흙을 퇴적시킨다.

B2

퇴적층이 발달하다

이곳은 퇴적층이 잘 발달되어 있다.

C1

퇴적 환경을 분석하다

지질학자들이 퇴적 환경을 분석했다.

C1

퇴적 속도가 ~하다

퇴적 속도가 예전보다 빨라졌다.

C2

세월의 퇴적 속에 ~

세월의 퇴적 속에 묻힌 진실.

عائلة الكلمة

الأسماء

퇴적물 (sediment)
퇴적층 (sedimentary layer)
퇴적암 (sedimentary rock)
퇴적량 (amount of sediment)

الأفعال

퇴적되다 (to be deposited)
퇴적시키다 (to cause to deposit)

الصفات

퇴적학적인 (sedimentological)

مرتبط

침식 (erosion)
운반 (transport)
풍화 (weathering)
지층 (stratum)
준설 (dredging)

كيفية الاستخدام

frequency

High in educational and scientific contexts; low in casual conversation.

أخطاء شائعة
  • Using '퇴적' for laundry. 빨래가 쌓이다.

    Laundry doesn't form geological layers; it just piles up.

  • Saying '돈을 퇴적하다'. 돈을 축적하다.

    Wealth is abstract accumulation, not physical sedimentation.

  • Confusing '퇴적' with '퇴출'. 퇴적 (sedimentation), 퇴출 (expulsion).

    They sound similar but have completely different meanings.

  • Using '침전' for a river delta. 퇴적.

    Deltas are formed by mechanical deposition, not just chemical precipitation.

  • Forgetting the '-되다' in '퇴적되다'. 모래가 퇴적되었다.

    Without '-되다', the noun cannot function as a passive verb.

نصائح

Learn the Pair

Always learn '침식' (erosion) and '퇴적' (sedimentation) together. They are opposites in nature and often appear in the same sentence.

Avoid for People

Never use '퇴적' to describe people gathering or piling up; use '모이다' or '밀집하다' instead.

The '적' is Key

The Hanja '적' (積) means to accumulate. Knowing this helps you remember other words like '축적', '누적', and '면적'.

Think Geography

If you are talking about a river, a beach, or a mountain, '퇴적' is your go-to word for anything piling up naturally.

Passive vs Active

Remember that nature usually 'does' the deposition, so '퇴적되다' (to be deposited) is much more common than '퇴적하다'.

Aspirated T

The '퇴' starts with a strong puff of air. Practice saying 't-hwe' to sound more native.

Lab vs Nature

Use '침전' for your chemistry homework and '퇴적' for your geography project.

Literary Flair

Use '세월의 퇴적' in a poem or a deep journal entry to describe getting older and wiser.

Layer Cake

Think of a layer cake. Each layer is a '퇴적층' (sedimentary layer).

CSAT Essential

If you're taking a Korean proficiency test, expect this word in the reading section about the environment.

احفظها

وسيلة تذكّر

Imagine a **TOE** (퇴) kicking a **JACK** (적) into a pile of sand. The sand piles up and 'sediments.'

ربط بصري

Imagine a river delta from high above, where the muddy water meets the blue sea and leaves a 'fan' of dirt.

Word Web

Geology River Sand Layers Erosion Delta Rock Time

تحدٍّ

Try to find a picture of a cliff with layers and describe it using '퇴적층' and '퇴적되다' in three sentences.

أصل الكلمة

From the Hanja 堆積. 堆 (퇴) means 'to pile up' or 'heap,' and 積 (적) means 'to accumulate' or 'store.'

المعنى الأصلي: To pile up into a heap and accumulate over time.

Sino-Korean (Hanja)

السياق الثقافي

No specific sensitivities, but be careful when discussing the 'Four Major Rivers Project' as it remains a polarized political issue.

English speakers often use 'sedimentation' in a purely scientific way, whereas '퇴적' is common in both science and general news in Korea.

Chaeseokgang Cliffs (채석강) Nakdong River Delta (낙동강 삼각주) EBS Science Documentaries

تدرّب في الحياة الواقعية

سياقات واقعية

Geography Class

  • 퇴적 작용
  • 퇴적층
  • 삼각주 형성
  • 운반 작용

Environmental News

  • 퇴적물 오염
  • 준설 작업
  • 하천 정비
  • 수질 악화

Museum Visit

  • 퇴적암 관찰
  • 지질 시대
  • 화석 발견
  • 층리 구조

Urban Planning

  • 항만 퇴적
  • 수로 확보
  • 토사 유출
  • 퇴적량 계산

Climate Change Discussion

  • 해수면 상승
  • 연안 퇴적
  • 기후 기록
  • 퇴적 속도 변화

بدايات محادثة

"한국에서 퇴적층을 가장 잘 볼 수 있는 곳이 어디인가요?"

"강 하구에 퇴적이 많이 되면 어떤 문제가 생길까요?"

"퇴적암 속에서 화석을 찾아본 적이 있나요?"

"왜 댐 뒤에는 퇴적물이 많이 쌓이게 될까요?"

"먼지가 퇴적되는 걸 보면서 세월의 흐름을 느껴본 적 있나요?"

مواضيع للكتابة اليومية

오늘 방문한 바닷가에서 퇴적 작용의 흔적을 찾아보고 묘사해 보세요.

나의 기억들이 마음속에 어떻게 퇴적되어 있는지 비유를 들어 써 보세요.

환경 오염이 퇴적물에 미치는 영향에 대해 자신의 생각을 정리해 보세요.

수천 년 후의 지층에는 우리 문명의 어떤 것들이 퇴적되어 있을까요?

침식과 퇴적 중 당신의 삶은 어느 쪽에 더 가깝다고 생각하나요?

الأسئلة الشائعة

10 أسئلة

Technically, snow can undergo sedimentation in a glacial context, but in daily life, '눈이 쌓이다' is the correct and natural expression. Using '퇴적' for snow makes you sound like a meteorologist or a scientist studying ice cores.

They are identical in meaning. '퇴적물' is the Korean word for sediment. It is used to describe the actual physical material (sand, mud, etc.) that has settled.

It is a noun. To use it as a verb, you must add '-되다' (to be deposited) or '-시키다' (to deposit/cause to deposit).

It is '퇴적암' (toe-jeok-am). The '암' comes from the Hanja for rock (岩).

Yes, but it's very formal. If you say '먼지가 퇴적되었다,' it implies a very thick, long-term layer of dust, almost like a geological feature. For normal cleaning, use '먼지가 쌓이다.'

It translates to 'sedimentation action' or 'process.' It's the standard way to refer to the geological mechanism of deposition.

Not exactly. '침전' is usually for smaller-scale, often chemical processes where a solid settles out of a liquid. '퇴적' is for larger-scale natural processes like rivers forming land.

No. For money or wealth, you must use '축적' (accumulation).

A delta is called '삼각주' (sam-gak-ju), and it is formed by '퇴적 작용'.

Yes, it is a very common term in the Earth Science (지구과학) and Geography (지리) sections of the Korean college entrance exam.

اختبر نفسك 185 أسئلة

writing

Write a sentence using '퇴적되다' to describe sand at a beach.

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
writing

Explain what '퇴적물' is in your own words (in Korean).

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
writing

Use '퇴적 작용' in a sentence about a river delta.

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
writing

Write a metaphorical sentence using '세월의 퇴적'.

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
writing

Describe the difference between '퇴적' and '침식' in one sentence.

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
writing

Translate: 'Sedimentation is a slow process.'

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
writing

Use '퇴적층' in a sentence about fossils.

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
writing

Translate: 'Dredging is needed to remove sediment from the harbor.'

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
writing

Write a sentence about wind causing sedimentation.

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
writing

Explain why '퇴적' is important for geologists.

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
writing

Translate: 'Heavy metals were deposited on the riverbed.'

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
writing

Use '퇴적시키다' in a causative sentence.

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
writing

Translate: 'The sedimentation rate has increased due to development.'

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
writing

Write a poetic sentence about '기억의 퇴적'.

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
writing

Describe a sedimentary rock using '퇴적암'.

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
writing

Translate: 'Sedimentation changes the Earth's terrain.'

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
writing

Use '퇴적 분지' in a sentence about resources.

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
writing

Translate: 'Dust was deposited on the bookshelf.'

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
writing

Explain the role of gravity in '퇴적'.

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
writing

Write a sentence about a dam and sediment.

Well written! Good try! Check the sample answer below.

صحيح! ليس تمامًا. الإجابة الصحيحة:
speaking

Pronounce the word '퇴적' correctly.

Read this aloud:

صحيح! ليس تمامًا. الإجابة الصحيحة:
speaking

Explain the meaning of '퇴적' in simple Korean.

Read this aloud:

صحيح! ليس تمامًا. الإجابة الصحيحة:
speaking

Talk about a place where you can see '퇴적층'.

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صحيح! ليس تمامًا. الإجابة الصحيحة:
speaking

Explain why '퇴적물' can be a problem for ships.

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صحيح! ليس تمامًا. الإجابة الصحيحة:
speaking

Describe how a delta (삼각주) is formed using '퇴적'.

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صحيح! ليس تمامًا. الإجابة الصحيحة:
speaking

What is the difference between '퇴적' and '침식'?

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صحيح! ليس تمامًا. الإجابة الصحيحة:
speaking

How can scientists use '퇴적층' to study the past?

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صحيح! ليس تمامًا. الإجابة الصحيحة:
speaking

Why do we need to '준설' (dredge) rivers?

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صحيح! ليس تمامًا. الإجابة الصحيحة:
speaking

Use '퇴적' in a sentence about the wind.

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صحيح! ليس تمامًا. الإجابة الصحيحة:
speaking

What does '세월의 퇴적' mean to you?

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صحيح! ليس تمامًا. الإجابة الصحيحة:
speaking

Name three things that can be '퇴적물'.

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صحيح! ليس تمامًا. الإجابة الصحيحة:
speaking

How does gravity affect '퇴적'?

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صحيح! ليس تمامًا. الإجابة الصحيحة:
speaking

Explain '퇴적암' in simple terms.

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speaking

Talk about the environmental impact of '퇴적물 오염'.

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صحيح! ليس تمامًا. الإجابة الصحيحة:
speaking

Why is '퇴적 속도' important in geology?

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صحيح! ليس تمامًا. الإجابة الصحيحة:
speaking

Use '퇴적시키다' in a sentence about a flood.

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صحيح! ليس تمامًا. الإجابة الصحيحة:
speaking

Where do you hear the word '퇴적' most often?

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صحيح! ليس تمامًا. الإجابة الصحيحة:
speaking

Explain the Hanja for '퇴적'.

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صحيح! ليس تمامًا. الإجابة الصحيحة:
speaking

Describe a '퇴적 분지' (sedimentary basin).

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صحيح! ليس تمامًا. الإجابة الصحيحة:
speaking

Why is '퇴적' a B1 level word?

Read this aloud:

صحيح! ليس تمامًا. الإجابة الصحيحة:
listening

Listen and identify: '강 하구에는 퇴적물이 많이 쌓입니다.' What is piling up?

صحيح! ليس تمامًا. الإجابة الصحيحة:
صحيح! ليس تمامًا. الإجابة الصحيحة:
listening

Listen and identify: '바람에 의한 퇴적으로 사구가 형성되었습니다.' What formed the sand dune?

صحيح! ليس تمامًا. الإجابة الصحيحة:
صحيح! ليس تمامًا. الإجابة الصحيحة:
listening

Listen and identify: '퇴적암에서는 화석이 자주 발견됩니다.' What is found in sedimentary rocks?

صحيح! ليس تمامًا. الإجابة الصحيحة:
صحيح! ليس تمامًا. الإجابة الصحيحة:
listening

Listen and identify: '준설은 퇴적물을 치우는 작업입니다.' What is dredging?

صحيح! ليس تمامًا. الإجابة الصحيحة:
صحيح! ليس تمامًا. الإجابة الصحيحة:
listening

Listen and identify: '퇴적층을 분석하면 기후를 알 수 있습니다.' What can be known by analyzing sedimentary layers?

صحيح! ليس تمامًا. الإجابة الصحيحة:
صحيح! ليس تمامًا. الإجابة الصحيحة:
listening

Listen and identify: '오염된 퇴적물은 정화가 어렵습니다.' Is contaminated sediment easy to clean?

صحيح! ليس تمامًا. الإجابة الصحيحة:
صحيح! ليس تمامًا. الإجابة الصحيحة:
listening

Listen and identify: '퇴적 속도가 예전보다 빨라졌습니다.' Is the sedimentation rate faster or slower?

صحيح! ليس تمامًا. الإجابة الصحيحة:
صحيح! ليس تمامًا. الإجابة الصحيحة:
listening

Listen and identify: '이곳은 수만 년의 역사가 퇴적된 곳입니다.' How much history is 'sedimented' here?

صحيح! ليس تمامًا. الإجابة الصحيحة:
صحيح! ليس تمامًا. الإجابة الصحيحة:
listening

Listen and identify: '퇴적 분지는 석유 자원의 보고입니다.' What resource is found in sedimentary basins?

صحيح! ليس تمامًا. الإجابة الصحيحة:
صحيح! ليس تمامًا. الإجابة الصحيحة:
listening

Listen and identify: '지층의 퇴적 순서가 뒤바뀌기도 합니다.' Does the order of sedimentation ever change?

صحيح! ليس تمامًا. الإجابة الصحيحة:
صحيح! ليس تمامًا. الإجابة الصحيحة:
listening

Listen and identify: '해양 퇴적물은 탄소를 저장합니다.' What do marine sediments store?

صحيح! ليس تمامًا. الإجابة الصحيحة:
صحيح! ليس تمامًا. الإجابة الصحيحة:
listening

Listen and identify: '퇴적 작용은 지구 표면을 평평하게 합니다.' What does sedimentation do to the Earth's surface?

صحيح! ليس تمامًا. الإجابة الصحيحة:
صحيح! ليس تمامًا. الإجابة الصحيحة:
listening

Listen and identify: '강물이 느려지면 퇴적이 시작됩니다.' When does sedimentation start?

صحيح! ليس تمامًا. الإجابة الصحيحة:
صحيح! ليس تمامًا. الإجابة الصحيحة:
listening

Listen and identify: '빙하 퇴적물은 크기가 다양합니다.' Are glacial sediments all the same size?

صحيح! ليس تمامًا. الإجابة الصحيحة:
صحيح! ليس تمامًا. الإجابة الصحيحة:
listening

Listen and identify: '세월의 퇴적 속에 묻힌 진실.' What is buried in the sedimentation of time?

صحيح! ليس تمامًا. الإجابة الصحيحة:
صحيح! ليس تمامًا. الإجابة الصحيحة:

/ 185 correct

Perfect score!

محتوى ذو صلة

مزيد من كلمات science

흡수하다

B2

امتصاص السوائل أو الضوء أو المعرفة. دمج شركة من خلال الاستحواذ.

흡수

B1

عملية امتصاص شيء ما، مثل السوائل أو العناصر الغذائية أو المعلومات.

축적하다

B2

تراكم أو بناء كمية كبيرة من شيء ما على مدى فترة من الزمن، مثل الثروة أو المعرفة أو الخبرة. مثال: لقد تراكمت لديه خبرة واسعة في هذا المجال.

축적

B2

التجميع التدريجي للأشياء مثل الثروة أو المعرفة أو الخبرة بمرور الوقت. (The gradual gathering of things like wealth, knowledge, or experience over time.)

누적

B2

فعل الجمع أو التراكم بمرور الوقت؛ المبلغ الإجمالي الذي تم بناؤه تدريجياً.

후천적

B2

Acquired or learned after birth through experience, education, or environment.

작용

B2

الفعل أو التأثير الذي يحدثه شيء ما على شيء آخر، أو عمل عملية معينة. (The action or effect that something has on another thing, or the functioning of a particular process.)

조절하다

B1

To adjust, regulate, or control something to a desired level or state. It often refers to managing physical settings or personal habits.

증폭

B2

تضخيم أو تكثيف شيء ما، مثل إشارة صوتية أو شعور. على سبيل المثال: 'قام المضخم بتكبير الصوت' أو 'ضخمت الإشاعة حالة الذعر'.

증폭되다

B2

To be amplified, magnified, or increased in intensity. It can refer to physical signals or abstract concepts like tension or rumors.

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