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B1 noun 11 min read

تجمع

tajammo'
Examples
Explanation تجمع in your Level:
At the A1 level, you can think of تجمع (tajammo) simply as 'people coming together'. Even though this word is a bit advanced for a total beginner, you might hear it when people talk about a lot of people in one place. Imagine you are at a park and you see many people. That is a 'تجمع'. In Persian, we use this word for groups. For example, 'تجمع مردم' means 'people gathering'. You don't need to use it in complex sentences yet. Just remember it means a group or a gathering. It is like the English word 'group' but used more for when they are all in one spot at the same time. You might see it on a sign or hear it on the news. It is a very useful word to recognize when you are in a crowded city like Tehran. Just think of it as 'many things or people in one place'.
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At the A2 level, you are starting to see how تجمع (tajammo) is used in more specific ways. It's not just any group; it's an assembly or a buildup. You can use it to describe things you see every day. For example, if there is a lot of snow on the ground, you can call it a 'تجمع برف' (snow accumulation). If there are many cars in a small street, it's a 'تجمع خودروها'. At this level, you should start noticing that it is a noun. You will often see it with the 'e' sound (Ezafe) after it, like 'تجمعِ...'. This helps you connect it to what is being gathered. It is more formal than just saying 'many' (خیلی), and it helps you describe situations more clearly. You might also hear it in simple health tips, like 'تجمع چربی' (fat accumulation), which is something people want to avoid. It is a step up from basic vocabulary and makes your Persian sound more organized.
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As a B1 (Intermediate) learner, تجمع (tajammo) becomes a key part of your vocabulary for discussing social, scientific, and news-related topics. You should understand that it refers to the process or state of accumulation and concentration. It is widely used in journalism to describe protests ('تجمع اعتراضی') or public gatherings. In a medical or scientific context, it describes the buildup of substances like fluids, toxins, or gases. You should be comfortable using it in sentences like 'تجمع زباله‌ها باعث آلودگی می‌شود' (The accumulation of trash causes pollution). At this level, you should also distinguish it from similar words like 'تمرکز' (concentration/focus) and 'مجموعه' (collection). You are now moving beyond simple descriptions and using 'تجمع' to explain cause-and-effect relationships in the world around you. It is a versatile noun that bridges the gap between everyday talk and more formal or technical Persian.
At the B2 level, you should master the nuances of تجمع (tajammo) across different registers. You understand its role in academic and professional Persian. For instance, in economics, you can discuss 'تجمع سرمایه' (capital accumulation) and its impact on society. In urban planning, you use it to describe 'تجمع جمعیت' (population concentration). You are also aware of the grammatical precision required; for example, knowing that 'تجمع' is a singular noun even when it refers to a group of people. You can use it to analyze news reports critically, understanding the difference between a 'تجمع قانونی' (legal gathering) and an 'غیرقانونی' (illegal) one. You can also use it metaphorically or in more abstract contexts, such as the gathering of data or evidence. Your ability to use 'تجمع' correctly in writing and formal speech shows that you have a strong grasp of Persian verbal nouns and their Arabic roots.
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At the C1 level, your use of تجمع (tajammo) is sophisticated and precise. You recognize its etymological roots and how it interacts with other words in the 'j-m-a' family. You can use it in complex socio-political analyses to describe the 'تجمع قدرت' (concentration of power) or the 'تجمع ثروت' (accumulation of wealth) and their systemic consequences. You are comfortable with its use in high-level scientific papers, describing phenomena like the 'تجمع زیستی' (bioaccumulation) of toxins in food chains. You can also appreciate its use in classical and modern literature, where it might describe a gathering of souls or thoughts. You understand the stylistic choice of using 'تجمع' over its Persian-root synonym 'انباشتگی' depending on the tone of your writing. Your command of this word allows you to navigate the most challenging Persian texts, from legal documents to philosophical treatises, with complete confidence.
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At the C2 level, you have a native-like intuition for the word تجمع (tajammo). You understand every subtle connotation it carries in political rhetoric, scientific discourse, and literary expression. You can use it to deconstruct complex arguments, perhaps discussing how the 'تجمع' of historical events leads to a revolution. You are adept at using it in highly formal speeches or academic publications, where precision is paramount. You can also play with the word's register, using it ironically or in complex metaphors. You know exactly when to pair it with specific verbs to create powerful imagery or precise technical descriptions. For you, 'تجمع' is not just a word for 'gathering'; it is a concept that describes the fundamental way things—whether they be physical particles, human beings, or abstract ideas—interact and consolidate in the Persian-speaking world. You are a master of the language's nuances.
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Examples

The Persian word تجمع (pronounced as 'tajammo') is a versatile and essential noun that every intermediate Persian learner should master. At its core, it refers to the act of gathering, assembling, or accumulating in a single location or state. Whether you are discussing a group of people meeting in a square, the buildup of fluid in a medical context, or the concentration of wealth in an economy, this word is your primary tool. It originates from the Arabic root 'j-m-a', which relates to collecting or bringing things together, a root that also gives us words like 'jomeh' (Friday, the day of gathering) and 'jame'eh' (society).

Social and Political Context
In the realm of current events and social studies, تجمع frequently describes a gathering of people. This can range from a peaceful assembly or a flash mob to a large-scale protest. When you read Iranian news headlines, you will often see phrases like 'تجمع اعتراض‌آمیز' (protest gathering). It implies a physical presence of individuals in a specific space for a shared purpose.

پلیس از تجمع غیرقانونی در مرکز شهر جلوگیری کرد.
(The police prevented an illegal gathering in the city center.)

Scientific and Medical Context
Beyond human gatherings, the word is indispensable in science. It describes the 'accumulation' of substances. For instance, a doctor might talk about the تجمع مایعات (accumulation of fluids) in a patient's lungs, or an environmental scientist might discuss the تجمع آلاینده‌ها (accumulation of pollutants) in the atmosphere. It suggests a gradual buildup over time until a significant concentration is reached.

تجمع چربی در بدن می‌تواند باعث بیماری‌های قلبی شود.
(Accumulation of fat in the body can cause heart diseases.)

Furthermore, the word carries a nuance of 'concentration'. In military or strategic contexts, تجمع نیروها refers to the concentration of troops in a specific sector. In economics, تجمع سرمایه refers to the concentration of capital. It is a word that describes the transition from a dispersed state to a unified or dense state. Understanding this word allows you to navigate Iranian media, medical reports, and academic texts with much greater ease, as it bridges the gap between physical science and social dynamics. It is more than just a 'meeting'; it is the physical manifestation of things coming together in one spot.

تجمع ابرها در آسمان نشان‌دهنده‌ی بارش قریب‌الوقوع باران است.
(The gathering of clouds in the sky indicates imminent rain.)

Economic and Urban Context
In urban planning, planners often discuss the تجمع جمعیت (population concentration) in metropolitan areas. This helps in understanding resource allocation. Similarly, in logistics, the gathering of goods in a warehouse is described using this term. It implies a focal point where multiple units become a single mass or group.

تجمع ثروت در دست عده‌ای معدود، باعث نابرابری اجتماعی می‌شود.
(The accumulation of wealth in the hands of a few causes social inequality.)

برای جلوگیری از تجمع زباله، باید بازیافت را جدی بگیریم.
(To prevent the accumulation of waste, we must take recycling seriously.)

Using تجمع correctly requires an understanding of its grammatical role as a verbal noun (Masdar). It can function as the subject of a sentence, an object, or part of a prepositional phrase. Because it is a noun, it is frequently followed by the Ezafe (-e sound) to specify what is being gathered or accumulated. For example, 'تجمع مردم' (gathering of people) or 'تجمع گرد و غبار' (accumulation of dust). Mastering these patterns is key to sounding natural in Persian.

As a Subject
When تجمع is the subject, it often drives the action of the sentence. It can be paired with verbs like 'رخ دادن' (to occur), 'شکل گرفتن' (to take shape), or 'ممنوع بودن' (to be forbidden).

تجمع بیش از ده نفر در این سالن ممنوع است.
(Gathering of more than ten people in this hall is forbidden.)

As a Direct Object
When you want to describe an action taken upon a gathering or accumulation, you use it as an object. Common verbs include 'مشاهده کردن' (to observe), 'متفرق کردن' (to disperse), or 'کاهش دادن' (to reduce).

دانشمندان تجمع گازهای گلخانه‌ای را بررسی می‌کنند.
(Scientists are investigating the accumulation of greenhouse gases.)

این دارو از تجمع پلاک در رگ‌ها جلوگیری می‌کند.
(This medicine prevents the accumulation of plaque in the veins.)

In Prepositional Phrases
You will often see it after prepositions like 'به دلیلِ' (due to), 'پس از' (after), or 'در' (in). This is common in news reporting or technical manuals.

ترافیک سنگین به دلیل تجمع خودروها در خروجی بزرگراه است.
(The heavy traffic is due to the gathering/congestion of cars at the highway exit.)

In more poetic or literary Persian, تجمع might describe the gathering of thoughts or memories. While 'تمرکز' (concentration) is more common for mental focus, 'تجمع' can be used to describe a flurry of ideas coming together. However, for a B1 learner, focusing on the physical and social usages is most beneficial. Always remember to check the context: if it's about people, think 'gathering'; if it's about substances, think 'accumulation'. This distinction helps in choosing the best English translation while maintaining the same Persian word.

تجمع باکتری‌ها در دهان باعث پوسیدگی دندان می‌شود.
(The accumulation of bacteria in the mouth causes tooth decay.)

گزارش‌هایی از تجمع دانشجویان در مقابل دانشگاه منتشر شده است.
(Reports have been published of students gathering in front of the university.)

If you are living in an Iranian city or consuming Persian media, تجمع is a word you will encounter daily. It is not just a dry dictionary term; it is alive in the streets, on the screens, and in the clinics. Understanding its various environments will help you recognize it instantly. From the evening news to a conversation with a plumber about a clogged pipe, the concept of 'things coming together' is everywhere.

The News and Social Media
In Persian-language news outlets like BBC Persian, Iran International, or IRNA, 'تجمع' is a keyword. It is used to report on political rallies, labor strikes, or public celebrations. You will often see it paired with adjectives like 'مسالمت‌آمیز' (peaceful) or 'گسترده' (widespread). If there is a crowd anywhere in the Persian-speaking world, the news will call it a 'تجمع'.

اخبار از تجمع هواداران فوتبال در میدان اصلی شهر خبر داد.
(The news reported the gathering of football fans in the city's main square.)

Health and Wellness
In a doctor's office or a health blog, you will hear about the accumulation of substances in the body. 'تجمع چربی' (fat accumulation) is a common topic in nutrition. 'تجمع سموم' (toxin accumulation) is a phrase often used in detox discussions. It describes a biological process where something builds up to a level that requires attention.

ورزش روزانه مانع از تجمع اسید لاکتیک در عضلات می‌شود.
(Daily exercise prevents the accumulation of lactic acid in the muscles.)

In urban environments, you might hear it in traffic reports. While 'ترافیک' is the loanword of choice, 'تجمع خودروها' (gathering/concentration of cars) is used to describe why a particular junction is blocked. Similarly, in environmental discussions in cities like Tehran, 'تجمع آلاینده‌ها' (accumulation of pollutants) is a constant topic during the winter months when inversion occurs. This word is the backbone of describing 'too much of something in one place'.

تجمع زباله‌ها در جوی آب باعث گرفتگی مسیر شده است.
(The accumulation of trash in the gutter has caused the path to be blocked.)

Educational and Academic Settings
In a university lecture on sociology or physics, 'تجمع' is used to describe the clustering of data points or the concentration of a population in urban centers. It is a formal term that adds precision to scientific descriptions. Students are expected to use it in essays to describe phenomena where individual units form a collective mass.

در این منطقه، تجمع مراکز خرید باعث افزایش ترافیک شده است.
(In this area, the concentration of shopping centers has caused an increase in traffic.)

تجمع ثروت در پایتخت، باعث مهاجرت از روستاها می‌شود.
(The accumulation of wealth in the capital causes migration from villages.)

While تجمع is a common word, learners often confuse it with other words derived from the same 'j-m-a' root. Because Persian uses many Arabic-derived roots, several words look and sound similar but have distinct meanings. Avoiding these pitfalls will make your Persian sound much more precise and professional. Let's look at the most common areas where learners stumble.

Confusing 'تجمع' with 'جامعه'
Learners sometimes use 'تجمع' when they mean 'society' (جامعه - Jame'eh). Remember that 'تجمع' is a temporary or physical gathering, while 'جامعه' is a broad, abstract social structure. You can have a 'تجمع' (gathering) inside a 'جامعه' (society), but you cannot use them interchangeably.

اشتباه: تجمع ما به پیشرفت نیاز دارد. (غلط)
درست: جامعه ما به پیشرفت نیاز دارد. (صحیح)
(Correct: Our society needs progress.)

Confusing 'تجمع' with 'مجموعه'
Another common mix-up is with 'مجموعه' (Majmoo'eh), which means 'collection' or 'set'. Use 'مجموعه' for a curated set of things, like a collection of stamps or a series of books. Use 'تجمع' for a physical accumulation or a gathering of people. You wouldn't say a 'تجمع' of stamps unless they were physically piled up in a heap!

اشتباه: من یک تجمع از تمبر دارم. (غلط)
درست: من یک مجموعه از تمبر دارم. (صحیح)
(Correct: I have a collection of stamps.)

Another mistake involves the verb agreement. Since تجمع refers to a group, learners often want to use a plural verb. However, in formal Persian, if 'تجمع' is the singular subject, the verb should be singular. For example, 'تجمع مردم پراکنده شد' (The gathering of people was dispersed) uses the singular 'shod' (became/was), not the plural 'shodand'. This is a nuance that separates intermediate learners from advanced speakers.

تجمع اعتراض‌آمیز پایان یافت.
(The protest gathering ended. - Note the singular verb 'payan yaft'.)

Overusing 'تجمع' for 'Meetings'
Don't use 'تجمع' for a scheduled business meeting or a casual hangout with friends. For those, use 'جلسه' (Jalaseh) or 'دورهمی' (Dore-hami). 'تجمع' implies a larger, more significant, or more physical assembly than a simple chat over coffee.

اشتباه: فردا برای قهوه یک تجمع داشته باشیم. (غلط)
درست: فردا برای قهوه یک دورهمی داشته باشیم. (صحیح)
(Correct: Let's have a get-together for coffee tomorrow.)

تجمع بیش از حد نمک در خاک، برای گیاهان مضر است.
(Excessive accumulation of salt in the soil is harmful to plants.)

To truly master تجمع, you must see how it fits into the ecosystem of Persian words that mean 'gathering' or 'concentration'. Persian is rich with synonyms that vary slightly in nuance, register, and context. Choosing the right one will elevate your speaking and writing from basic to sophisticated. Let's compare 'تجمع' with its closest relatives.

تجمع (Tajammo') vs. تراکم (Tarakom)
While both can mean concentration, تراکم specifically refers to 'density'. You use 'تراکم جمعیت' to talk about how many people live in a square kilometer. 'تجمع' is about the act of coming together, whereas 'تراکم' is about how tightly packed things are. For example, you 'تجمع' (gather) in a square, which creates high 'تراکم' (density).

تجمع مردم در مترو باعث افزایش تراکم جمعیت در واگن‌ها شد.
(The gathering of people in the metro caused an increase in population density in the wagons.)

تجمع (Tajammo') vs. انباشتگی (Anbashtegi)
انباشتگی is the pure Persian (non-Arabic) word for 'accumulation' or 'piling up'. It is often used for physical objects like snow, trash, or wealth. While 'تجمع' can also mean accumulation, 'انباشتگی' sounds slightly more descriptive of a 'heap' or a 'pile'. In economics, 'انباشت سرمایه' (capital accumulation) is a standard term, though 'تجمع سرمایه' is also used.

تجمع برف در جاده‌ها (Gathering of snow on roads) vs. انباشتگی برف (Piling up of snow).

تجمع (Tajammo') vs. گردآمدن (Gerd-amadan)
گردآمدن is a more literary and poetic way to say 'gathering'. It literally means 'to come around' or 'to circle together'. You would use this in a story or a poem to describe friends meeting. 'تجمع' sounds more like an official event or a physical phenomenon.

دوستان برای جشن تولد گرد هم آمدند.
(Friends gathered together for the birthday party. - More social and warm than 'تجمع'.)

Finally, consider تمرکز (Tamarkoz). While 'تجمع' is about things being in the same place, 'تمرکز' is about 'focus' or 'centralization'. You 'تمرکز' your mind on a task, or a government 'تمرکز' power in the capital. If you are talking about the *point* of gathering, 'تجمع' is better. If you are talking about the *intensity* or *control* of the gathering, 'تمرکز' might be more appropriate. Knowing these subtle differences allows you to paint a more accurate picture in the mind of your listener.

تجمع نیروها در مرز (Concentration of troops at the border) vs. تمرکز قدرت (Centralization of power).

برای درک بهتر تجمع، آن را با 'پراکندگی' (dispersion) مقایسه کنید.
(To better understand 'gathering', compare it with 'dispersion'.)

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Examples by Level

1

تجمع مردم در پارک زیاد است.

The gathering of people in the park is a lot.

Simple subject-predicate sentence.

2

من یک تجمع کوچک دیدم.

I saw a small gathering.

Using 'تجمع' as a direct object.

3

تجمع دانش‌آموزان جلوی مدرسه.

Gathering of students in front of the school.

Noun phrase with Ezafe.

4

آیا این یک تجمع است؟

Is this a gathering?

Question form.

5

تجمع پرندگان روی درخت.

Gathering of birds on the tree.

Using 'تجمع' for animals.

6

تجمع ماشین‌ها در خیابان.

Gathering of cars in the street.

Using 'تجمع' for objects.

7

یک تجمع بزرگ در میدان هست.

There is a big gathering in the square.

Existential sentence.

8

تجمع دوستان در خانه.

Gathering of friends at home.

Social context.

1

تجمع برف در جاده خطرناک است.

Snow accumulation on the road is dangerous.

Subject with a prepositional phrase.

2

پلیس تجمع را متفرق کرد.

The police dispersed the gathering.

Past tense verb with object.

3

تجمع چربی برای سلامتی بد است.

Fat accumulation is bad for health.

Abstract concept.

4

او درباره تجمع زباله صحبت کرد.

He talked about trash accumulation.

Preposition 'darbare-ye' (about).

5

تجمع ابرها یعنی باران می‌آید.

The gathering of clouds means rain is coming.

Causal relationship.

6

تجمع آب در حیاط پس از باران.

Water accumulation in the yard after rain.

Physical state.

7

تجمع هواداران جلوی هتل.

Gathering of fans in front of the hotel.

Specific noun gathering.

8

این تجمع غیرقانونی نیست.

This gathering is not illegal.

Negative sentence with adjective.

1

تجمع آلاینده‌ها در هوای تهران افزایش یافته است.

The accumulation of pollutants in Tehran's air has increased.

Present perfect tense.

2

پزشک نگران تجمع مایع در ریه بیمار بود.

The doctor was worried about the accumulation of fluid in the patient's lung.

Medical terminology.

3

تجمع اعتراضی کارگران در مقابل مجلس برگزار شد.

The workers' protest gathering was held in front of the parliament.

Passive-like construction.

4

تجمع ثروت در دست عده‌ای خاص ناعادلانه است.

The accumulation of wealth in the hands of a specific few is unfair.

Sociopolitical context.

5

تجمع باکتری‌ها در غذا باعث مسمومیت می‌شود.

The accumulation of bacteria in food causes poisoning.

Scientific cause and effect.

6

دولت از تجمع نیروها در مرز خبر داد.

The government reported the concentration of troops at the border.

Formal news report.

7

تجمع بیش از حد نمک خاک را نابود می‌کند.

Excessive accumulation of salt destroys the soil.

Environmental context.

8

تجمع خاطرات در ذهن او باعث دلتنگی شد.

The gathering of memories in his mind caused nostalgia.

Metaphorical use.

1

تجمع سرمایه در بخش تولید می‌تواند اقتصاد را شکوفا کند.

Capital accumulation in the production sector can make the economy flourish.

Economic terminology.

2

گزارش‌ها حاکی از تجمع گسترده مردم در میدان آزادی است.

Reports indicate a widespread gathering of people in Azadi Square.

Journalistic style 'haki az' (indicative of).

3

تجمع پلاک در رگ‌ها عامل اصلی سکته قلبی است.

Plaque accumulation in the veins is the main cause of heart attack.

Technical medical Persian.

4

تجمع گازهای سمی در معدن باعث انفجار شد.

The accumulation of toxic gases in the mine caused an explosion.

Industrial safety context.

5

تجمع جمعیت در کلان‌شهرها چالش‌های مدیریتی ایجاد می‌کند.

Population concentration in megacities creates management challenges.

Urban planning context.

6

تجمع اسید لاکتیک در عضلات باعث خستگی می‌شود.

Lactic acid accumulation in muscles causes fatigue.

Biological process.

7

تجمع مدارک علیه متهم، کار را برای وکیل سخت کرد.

The accumulation of evidence against the accused made the work hard for the lawyer.

Legal context.

8

تجمع گرد و غبار روی وسایل الکترونیکی مضر است.

Dust accumulation on electronic devices is harmful.

Technical maintenance.

1

تجمع زیستی جیووه در زنجیره غذایی یک تهدید جدی است.

The bioaccumulation of mercury in the food chain is a serious threat.

Specialized scientific term 'Tajammo-e zisti'.

2

تجمع قدرت در نهادهای غیرپاسخگو منجر به فساد می‌شود.

The concentration of power in unaccountable institutions leads to corruption.

Advanced political analysis.

3

تجمع تدریجی تنش‌ها در منطقه، احتمال جنگ را افزایش داد.

The gradual accumulation of tensions in the region increased the probability of war.

Geopolitical context.

4

تجمع آرای مخالف باعث ابطال مصوبه شد.

The accumulation of opposing votes led to the annulment of the resolution.

Legal/Parliamentary context.

5

تجمع نقدینگی در بازار طلا باعث تورم شد.

The accumulation of liquidity in the gold market caused inflation.

Financial analysis.

6

تجمع رسوبات در پشت سد، ظرفیت آن را کاهش داده است.

The accumulation of sediment behind the dam has reduced its capacity.

Engineering context.

7

تجمع افکار پریشان مانع از تمرکز او بر کار می‌شد.

The gathering of distracted thoughts prevented him from focusing on work.

Psychological/Literary use.

8

تجمع ستارگان در این کهکشان بسیار متراکم است.

The concentration of stars in this galaxy is very dense.

Astronomical context.

1

تجمع دیالکتیکی تضادها در نهایت به تغییر بنیادین می‌انجامد.

The dialectical accumulation of contradictions ultimately leads to fundamental change.

Philosophical discourse.

2

تجمع سرمایه نمادین در این طبقه اجتماعی، قدرت سیاسی آن‌ها را تثبیت کرد.

The accumulation of symbolic capital in this social class consolidated their political power.

Sociological terminology (Bourdieu).

3

تجمع ریزگردها در ریه، پیامدهای پاتولوژیک جبران‌ناپذیری دارد.

The accumulation of micro-dust in the lungs has irreversible pathological consequences.

Highly technical medical Persian.

4

تجمع رانت در لایه‌های مدیریتی، مانع از توسعه پایدار است.

The accumulation of rent-seeking in management layers is an obstacle to sustainable development.

Advanced economic/political critique.

5

تجمع استعاره‌ها در شعر او، لایه‌های معنایی پیچیده‌ای ایجاد کرده است.

The accumulation of metaphors in his poetry has created complex layers of meaning.

Literary criticism.

6

تجمع پتانسیل الکتریکی در ابرها منجر به تخلیه ناگهانی بار می‌شود.

The accumulation of electrical potential in clouds leads to sudden discharge of charge.

Physics terminology.

7

تجمع داده‌های کلان نیازمند زیرساخت‌های پردازشی پیشرفته است.

The accumulation of big data requires advanced processing infrastructures.

Information technology context.

8

تجمع تاریخی مطالبات، جامعه را در آستانه تحول قرار داده است.

The historical accumulation of demands has placed society on the brink of transformation.

Historical/Sociological analysis.

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