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خورشیدی

B1 adjective #3,500 most common 9 min read

خورشیدی

khorshidi Top 3,500

Practice it Examples Notes & Tips خورشیدی in 30 Seconds

Explanation خورشیدی in your Level:

At the A1 level, you only need to know that 'khorshidi' comes from 'khorshid' (sun). You can think of it as 'sun-thing'. You might see it in simple pictures of the 'Solar System' or on a 'solar calculator'. It is an adjective, which means it describes a noun. In Persian, you put it after the noun. For example, 'energy-ye khorshidi' means solar energy. Don't worry about the big science words yet; just remember that if something works using the sun's light, it is probably 'khorshidi'. It is a very positive word because the sun is important in Iran. You will hear it when people talk about the Iranian calendar too. Just remember: Sun = Khorshid, Solar = Khorshidi.

At the A2 level, you should start using 'khorshidi' in basic sentences about science and technology. You should know the phrase 'manzume-ye khorshidi' (solar system) and 'energy-ye khorshidi' (solar energy). You should also understand that 'khorshidi' is different from 'aftabi'. Use 'aftabi' for the weather (sunny day) and 'khorshidi' for technical things related to the sun. For example, 'cheragh-e khorshidi' is a solar lamp. You can also recognize this word when looking at a calendar. Iran uses a 'solar' calendar, called 'Hejri-ye Khorshidi'. If you see this on a website or a phone, it means the date is in the Persian solar format, not the Western or Lunar format.

At the B1 level, you are expected to use 'khorshidi' in more detailed discussions about the environment and astronomy. You should be comfortable using it with common technical nouns like 'panel' (panel), 'niroogah' (power plant), and 'gereftegi' (eclipse). You should understand the Ezafe construction well enough to link 'khorshidi' to plural nouns, such as 'panel-ha-ye khorshidi' (solar panels). This is also the level where you should distinguish between 'khorshidi' and 'shamsi'. Use 'khorshidi' for modern, scientific, or purely Persian contexts, and 'shamsi' for more traditional or formal calendar references. You might read news articles about solar energy projects and should be able to identify 'khorshidi' as a key technical term.

At the B2 level, 'khorshidi' should be part of your active vocabulary for discussing climate change, physics, and history. You should be able to explain the difference between the 'Solar Hijri' and 'Lunar Hijri' calendars using this word. You should also be familiar with more advanced collocations like 'tabash-e khorshidi' (solar radiation) or 'toofan-e khorshidi' (solar storm). At this level, you can use the word in formal writing, such as an essay about renewable energy. You understand that while 'khorshidi' is primarily a scientific term, it carries a cultural weight in Iran due to the historical significance of the sun. You can also handle the word when it appears in compound structures or as part of complex scientific descriptions in documentaries.

At the C1 level, your understanding of 'khorshidi' involves nuanced register shifts and literary potential. You can discuss the etymological roots of the word, linking it to Middle Persian 'xwar-xšēd'. You are capable of reading academic papers on 'photovoltaic systems' where 'khorshidi' is used in highly specific technical ways. You also recognize when 'khorshidi' might be used metaphorically in contemporary literature or high-level journalism to describe something as central, life-giving, or inevitable, mirroring the sun's role. You can navigate the debate between using 'shamsi' (Arabic-rooted) and 'khorshidi' (Persian-rooted) in the context of linguistic purism (Persian-e Sareh) and choose the appropriate term based on your audience.

At the C2 level, you have a masterly command over 'khorshidi'. You can utilize it in philosophical or poetic discourse, perhaps contrasting the 'khorshidi' (solar/rational) with the 'mahtabi' (lunar/mystical) in a critique of Persian literature. You understand the technicalities of the 'Solar Hijri' calendar to a degree where you can explain its leap year calculations to others. Your usage is indistinguishable from a native speaker, including the subtle prosody of the Ezafe when 'khorshidi' follows complex noun phrases. You are also aware of very rare or archaic uses of the word in classical texts where the adjective might have had slightly different connotations before the modern scientific era solidified its current meaning.

Practice it Examples Notes & Tips

خورشیدی in 30 Seconds

Khorshidi means 'solar' and is the adjective form of 'khorshid' (sun).
It is used for science, technology, and the Iranian solar calendar.
It follows the noun it modifies using the Persian Ezafe (e) sound.
It is different from 'aftabi' which describes sunny weather conditions.

The Persian word خورشیدی (khorshidi) is a versatile and essential adjective in the Persian language, primarily used to describe anything related to the sun. At its linguistic core, it is formed by taking the noun خورشید (khorshid), meaning 'sun', and appending the adjectival suffix -i. This transformation allows speakers to attribute solar characteristics to a wide variety of nouns, ranging from astronomical bodies to modern green technologies. In contemporary Iran and Persian-speaking regions, you will encounter this word most frequently in discussions regarding renewable energy, science, and timekeeping. It carries a sense of brightness, power, and natural origin. While the sun has been a central symbol in Persian culture for millennia—symbolizing truth, warmth, and the divine—the adjective خورشیدی has evolved to bridge the gap between ancient poetic descriptions and modern scientific terminology.

Scientific Context: In astronomy, it is the standard term for 'solar', as seen in منظومه خورشیدی (Manzume-ye Khorshidi), which means the Solar System. It describes the gravitational and physical relationship between the sun and the planets.
Technological Context: With the global shift toward sustainability, خورشیدی is ubiquitous in environmental news. Terms like پنل خورشیدی (solar panel) and انرژی خورشیدی (solar energy) are part of daily vocabulary for engineers and activists alike.

ایران پتانسیل زیادی برای تولید انرژی خورشیدی دارد.
Iran has a lot of potential for producing solar energy.

Beyond science, the word is crucial for understanding the Iranian calendar. The official calendar of Iran and Afghanistan is the هجری خورشیدی (Solar Hijri) calendar. Unlike the Lunar Hijri calendar used for religious dates in many Muslim-majority countries, the Solar Hijri calendar is based on the Earth's revolution around the sun, making it one of the most accurate solar calendars in the world. When you hear someone mention a year like '1403 khorshidi', they are specifying the solar year to avoid confusion with the lunar year. This distinction is vital for government, business, and daily planning in Persian-speaking societies.

امروز اولین روز سال خورشیدی است.
Today is the first day of the solar year.

Finally, the word appears in everyday objects. While 'aftabi' (sunny) is often used for things like sunglasses (eynak-e aftabi), 'khorshidi' can be used more formally or technically. For instance, a 'solar eclipse' is known as خورشیدگرفتگی, but in descriptive texts, the adjective form reinforces the solar nature of the event. Whether you are reading a textbook about the stars or a manual for a water heater, خورشیدی is your window into the solar world.

Using خورشیدی correctly requires an understanding of the Persian Ezafe construction. In Persian, adjectives typically follow the noun they modify, and the noun is linked to the adjective with a short 'e' sound (the Ezafe). For example, to say 'solar energy', you say انرژیِ خورشیدی (energy-ye khorshidi). The word خورشیدی itself does not change based on the gender or number of the noun, which simplifies its usage for English speakers who are used to complex adjective agreements in other languages.

Placement Rule: Always place 'khorshidi' after the noun it describes. Noun + Ezafe + khorshidi.
Comparison: Unlike 'khorshid' (noun), 'khorshidi' (adjective) cannot stand alone as a subject. It must modify a noun or follow a linking verb like 'is'.

این ساعت با باتری خورشیدی کار می‌کند.
This watch works with a solar battery.

When using it in more complex sentences, خورشیدی can be part of a compound noun or a technical phrase. For instance, in the sentence 'The solar system has eight planets', you would say منظومه خورشیدی هشت سیاره دارد. Here, 'Manzume-ye Khorshidi' acts as a single unit. It is also important to note that when خورشیدی modifies a noun that ends in a vowel, the Ezafe sound is often represented by a 'ye' (ی) or a 'ye' with a hamza, depending on the orthography style. For example, نیروگاهِ خورشیدی (niroogah-e khorshidi - solar power plant).

آن‌ها در حال نصب پنل‌های خورشیدی هستند.
They are installing solar panels.

In formal writing, such as academic papers or technical manuals, خورشیدی is often paired with words like تابش (radiation) or جرم (mass). For example, تابش خورشیدی (solar radiation). In these contexts, the word maintains a neutral, objective tone. In contrast, in poetry, while khorshid is common, the adjective khorshidi might be used to describe someone's face or eyes as 'sun-like' or 'radiant', though synonyms like aftabi or derakhshan are more frequent for that specific poetic purpose. Understanding these nuances helps a learner choose the right word for the right register.

تقویم خورشیدی بسیار دقیق است.
The solar calendar is very accurate.

If you were to walk through the streets of Tehran or listen to a Persian news broadcast, you would hear خورشیدی in several specific, high-frequency contexts. The most common is undoubtedly the news. As Iran invests in infrastructure, reports on نیروگاه‌های خورشیدی (solar power plants) in central deserts like Yazd or Kerman are frequent. Journalists use the word to discuss energy independence and environmental policy. If you are watching a science documentary on a channel like 'Manoto' or 'IRIB 4', the narrator will use خورشیدی constantly when discussing the universe, solar flares, or the lifecycle of stars.

News & Media: Frequent in headlines about climate change, energy bills, and technological advancements.
Education: Every schoolchild in Iran learns about 'Manzume-ye Khorshidi' in their science textbooks from a young age.

اخبار گفت که بزرگترین نیروگاه خورشیدی افتتاح شد.
The news said that the largest solar power plant was inaugurated.

Another place you will hear this word is in administrative and official settings. When filling out forms or discussing dates, people distinguish between the سال خورشیدی (solar year) and the سال قمری (lunar year). For example, a lawyer might say, 'According to the solar calendar year 1402...'. This is not just technical jargon; it is a necessary part of defining legal and contractual timelines in Iran. Even in casual conversation, if someone is buying a calculator or a garden light, they might ask the shopkeeper, 'Is this khorshidi?' meaning 'Does this charge via the sun?'

این ماشین حساب با نور خورشیدی شارژ می‌شود.
This calculator charges with solar light.

In the world of fashion and accessories, while 'aftabi' is the standard for sunglasses, you might occasionally hear 'khorshidi' in a more descriptive or technical way, perhaps referring to the lens coating or a specific solar-reactive technology. However, its primary domain remains science, technology, and the calendar. If you listen to podcasts about future trends or space exploration in Persian, خورشیدی will be one of the most recurring technical adjectives you encounter. It represents the modernization of the Persian language as it adapts ancient roots to describe 21st-century innovations.

One of the most frequent mistakes English speakers make when learning Persian is confusing خورشیدی (khorshidi) with آفتابی (aftabi). While both are related to the sun, they are not interchangeable in most contexts. Aftabi is primarily used for weather and the physical presence of sunlight. For example, you say 'emrooz aftabi ast' (today is sunny). You would never say 'emrooz khorshidi ast' to describe the weather. Khorshidi is a relational adjective (solar), whereas aftabi is a descriptive adjective (sunny).

Mistake 1: Weather: Using 'khorshidi' for a sunny day. Correct: 'rooz-e aftabi'. Incorrect: 'rooz-e khorshidi'.
Mistake 2: Sunglasses: Calling sunglasses 'eynak-e khorshidi'. While understandable, the standard term is 'eynak-e aftabi'.

غلط: هوا امروز خورشیدی است.
Wrong: The weather is solar today. (Should be 'aftabi')

Another common error involves the word شمسی (shamsi). This is an Arabic loanword that also means 'solar'. In the context of the calendar, shamsi and khorshidi are often used interchangeably, but there are subtle differences in register. 'Hejri-ye Shamsi' is the formal, traditional name of the calendar, while 'Hejri-ye Khorshidi' is the more modern, Persian-centric name. Beginners often get confused about which one to use. A good rule of thumb: use khorshidi for technology and science, and shamsi or khorshidi for the calendar, but prefer khorshidi if you want to sound more 'purely Persian'.

درست: تقویم هجری شمسی یا خورشیدی.
Correct: Solar Hijri Calendar (both 'shamsi' and 'khorshidi' are okay here).

Finally, learners sometimes forget the Ezafe when combining خورشیدی with other words. Because English uses 'solar' as a modifier before the noun without any linking particle (e.g., 'solar panel'), learners often say 'khorshidi panel' or just 'khorshid panel'. Remember the Persian structure: Noun + Ezafe + Adjective. It must be 'panel-e khorshidi'. Omitting the Ezafe makes the sentence sound broken and ungrammatical. Practice saying the noun and the adjective as one flowing phrase to get the rhythm right.

The Persian language has a rich vocabulary for light and the sun, leading to several words that are similar to خورشیدی but have distinct uses. The most prominent alternative is شمسی (shamsi). Derived from the Arabic word 'shams' (sun), this word is used almost exclusively in historical, religious, or formal calendar contexts. While khorshidi is gaining ground as a more 'Persian' alternative, shamsi remains deeply rooted in the formal name of the Iranian calendar. You wouldn't usually use shamsi for 'solar panel' or 'solar system' in modern scientific Persian.

خورشیدی vs. شمسی: Khorshidi is modern/scientific; Shamsi is traditional/calendar-focused.
خورشیدی vs. آفتابی: Khorshidi is 'solar' (technical); Aftabi is 'sunny' (weather/casual).

سال هجری شمسی با بهار شروع می‌شود.
The Solar Hijri year begins with spring.

Another related word is نورانی (noorani), meaning 'luminous' or 'radiant'. While khorshidi specifies the source of the energy (the sun), noorani describes the quality of the light. You might describe a person's face as noorani, but you would never describe it as khorshidi unless you were being very experimental with your metaphors. Similarly, تابناک (tabnak) and درخشان (derakhshan) mean 'shining' or 'brilliant'. These are often used as synonyms for 'bright' in poetic literature, whereas khorshidi is much more functional and specific.

ستاره‌های درخشان در آسمان شب.
Brilliant stars in the night sky.

Lastly, consider the word مهر (Mehr). In ancient Persian, Mehr was the name of the sun god (Mithra) and is still used today as a name for the seventh month of the Iranian calendar and as a word for 'kindness' or 'affection'. While you won't use Mehr as a direct substitute for khorshidi in a scientific sentence, understanding this cultural connection helps you see why the sun (and by extension, the word khorshidi) holds such a prestigious place in the Persian lexicon. When you choose khorshidi, you are using a word with thousands of years of linguistic heritage, even if you are just talking about a solar-powered calculator.

How Formal Is It?

Fun Fact

The 'kh' sound in Persian was actually an 'sw' sound in Old Indo-European. Over thousands of years, 'sw' became 'khw' and then simply 'kh' in modern Persian.

Pronunciation Guide

UK /xoɾʃiːdiː/

US /xoʊrʃidi/

The primary stress is on the final syllable '-di'.

Rhymes With

ناپدیدی (napadidi) دیدی (didi) شنیدی (shenidi) سفیدی (sefidi) بعیدی (ba'idi) جدیدی (jadidi) شدیدی (shadidi) مفیدی (mofidi)

Common Errors

Pronouncing 'kh' as a hard 'k' (it should be a fricative).
Shortening the final 'i' (it should be a long vowel).
Missing the 'r' sound in the middle.
Stress on the first syllable.
Confusing the 'o' with an 'u' sound.

Difficulty Rating

Reading 2/5

Easy to recognize once you know 'khorshid'.

Writing 3/5

Requires correct spelling of the 'kh' and 'sh' sounds.

Speaking 3/5

The 'kh' sound can be tricky for English speakers.

Listening 2/5

Distinctive sound, easy to pick out in a sentence.

What to Learn Next

Prerequisites

خورشید نور زمین سال انرژی

Learn Next

سیاره کهکشان تجدیدپذیر محیط زیست فناوری

Advanced

فتوولتائیک تابش طیف‌سنجی مگنتوسفر هلیوسیسمیولوژی

Grammar to Know

Ezafe Construction

انرژیِ خورشیدی (Energy-ye khorshidi)

Adjectival Suffix -i

خورشید + ی = خورشیدی

Plural Adjectives

Adjectives in Persian do not usually take plural endings when modifying a plural noun: پنل‌های خورشیدی.

Comparative Adjectives

خورشیدی‌تر (More solar - rare)

Word Order

Noun always precedes the adjective 'khorshidi'.

Examples by Level

این یک ساعت خورشیدی است.

This is a solar watch.

Simple Ezafe linking 'sa'at' (watch) and 'khorshidi'.

منظومه خورشیدی بزرگ است.

The solar system is big.

'Manzume' means system/constellation.

انرژی خورشیدی خوب است.

Solar energy is good.

Basic subject + adjective + verb structure.

تقویم خورشیدی را دوست دارم.

I like the solar calendar.

'ra' is the direct object marker.

این ماشین خورشیدی است.

This car is solar.

The adjective follows the noun directly as a predicate.

نور خورشیدی قوی است.

Solar light is strong.

Nour (light) + Ezafe + khorshidi.

چراغ خورشیدی در باغ است.

The solar lamp is in the garden.

Cheragh (lamp) is the noun.

ما سال خورشیدی داریم.

We have a solar year.

Sal (year) + khorshidi.

پنل خورشیدی روی پشت‌بام است.

The solar panel is on the roof.

Posht-e bam is a compound noun for roof.

امروز درباره منظومه خورشیدی خواندیم.

Today we read about the solar system.

Darbare-ye means 'about'.

باتری خورشیدی برای محیط زیست بهتر است.

Solar battery is better for the environment.

Behtar (better) is the comparative form.

آیا این ماشین حساب خورشیدی است؟

Is this calculator solar?

Question form using 'aya'.

تقویم ایران هجری خورشیدی است.

The calendar of Iran is Solar Hijri.

Proper name of the calendar.

آن‌ها یک نیروگاه خورشیدی ساختند.

They built a solar power plant.

Niroogah means power plant.

آب‌گرمکن خورشیدی در این خانه وجود دارد.

There is a solar water heater in this house.

Ab-garmkan is a compound noun.

نور خورشیدی به گیاهان کمک می‌کند.

Solar light helps plants.

Komak kardan (to help) takes the preposition 'be'.

استفاده از انرژی خورشیدی در حال افزایش است.

The use of solar energy is increasing.

Estefade (use) + az (from/of).

خورشیدگرفتگی یک پدیده خورشیدی جالب است.

A solar eclipse is an interesting solar phenomenon.

Padide (phenomenon) is the noun being modified.

پنل‌های خورشیدی فتوولتائیک برق تولید می‌کنند.

Photovoltaic solar panels produce electricity.

Plural noun 'panel-ha' with Ezafe.

سال ۱۴۰۳ خورشیدی از فروردین آغاز شد.

The year 1403 solar started from Farvardin.

Farvardin is the first month of the solar year.

دولت از پروژه‌های خورشیدی حمایت می‌کند.

The government supports solar projects.

Hemayat kardan (to support).

سیستم گرمایشی این هتل خورشیدی است.

The heating system of this hotel is solar.

System-e garmayeshi is a complex noun phrase.

او در مورد فیزیک خورشیدی تحقیق می‌کند.

He is researching solar physics.

Tahghigh kardan (to research).

تابش خورشیدی در کویر بسیار زیاد است.

Solar radiation is very high in the desert.

Tabash means radiation or shining.

نیروگاه‌های خورشیدی متمرکز کارایی بالایی دارند.

Concentrated solar power plants have high efficiency.

Motamarkez means concentrated.

توفان‌های خورشیدی می‌توانند به ماهواره‌ها آسیب بزنند.

Solar storms can damage satellites.

Asib zadan (to damage) takes 'be'.

تفاوت تقویم قمری و خورشیدی در تعداد روزهاست.

The difference between lunar and solar calendars is in the number of days.

Tafavot (difference) between two adjectives.

معماری خورشیدی به کاهش مصرف انرژی کمک می‌کند.

Solar architecture helps reduce energy consumption.

Me'mari means architecture.

سلول‌های خورشیدی سیلیکونی رایج‌ترین نوع هستند.

Silicon solar cells are the most common type.

Rayej-tarin is the superlative 'most common'.

بادهای خورشیدی ذرات باردار را به فضا می‌فرستند.

Solar winds send charged particles into space.

Bad-ha-ye khorshidi (solar winds).

توسعه فناوری خورشیدی یک اولویت ملی است.

Developing solar technology is a national priority.

Tose'e (development) and olaviat (priority).

پرتوهای خورشیدی ماوراء بنفش برای پوست مضر هستند.

Ultraviolet solar rays are harmful to the skin.

Ma-varaye banafsh (ultraviolet).

تحلیل طیف‌سنجی نشان‌دهنده فعالیت‌های خورشیدی است.

Spectroscopic analysis indicates solar activities.

Teyf-sanji means spectroscopy.

دقت تقویم خورشیدی مدیون محاسبات دقیق خیام است.

The accuracy of the solar calendar is due to Khayyam's precise calculations.

Madyoon (indebted/due to).

نوسانات خورشیدی بر اقلیم زمین تأثیرگذارند.

Solar fluctuations are influential on Earth's climate.

Navasanat means fluctuations.

گذار به اقتصاد خورشیدی نیازمند زیرساخت‌های نوین است.

The transition to a solar economy requires modern infrastructure.

Gozar (transition) and zirsakht (infrastructure).

تاج خورشیدی تنها در زمان گرفتگی کامل قابل رؤیت است.

The solar corona is only visible during a total eclipse.

Taj-e khorshidi (solar corona).

پایداری انرژی خورشیدی در مناطق کویری تضمین شده است.

The sustainability of solar energy in desert regions is guaranteed.

Paydari (sustainability/stability).

در ادبیات معاصر، نمادهای خورشیدی بازتعریف شده‌اند.

In contemporary literature, solar symbols have been redefined.

Baz-ta'rif (redefined).

بهره‌وری سلول‌های خورشیدی پروسکایت در حال بهبود است.

The efficiency of perovskite solar cells is improving.

Bahre-vari (efficiency/productivity).

هلیوسیسمیولوژی به بررسی لرزه‌های خورشیدی می‌پردازد.

Helioseismology deals with the study of solar oscillations.

Highly technical scientific term.

انطباق دقیق سال خورشیدی با فصول، دستاورد بزرگی بود.

The precise alignment of the solar year with the seasons was a great achievement.

Entebagh (alignment/conformity).

دینامیک خورشیدی پیچیدگی‌های میدان مغناطیسی را فاش می‌کند.

Solar dynamics reveal the complexities of the magnetic field.

Dynamic (dynamics) as a loanword.

پارادایم انرژی خورشیدی ساختار قدرت جهانی را تغییر می‌دهد.

The solar energy paradigm is changing the global power structure.

Paradigm (paradigm) used in a socio-political context.

تأثیر بادهای خورشیدی بر مگنتوسفر زمین حیاتی است.

The impact of solar winds on Earth's magnetosphere is vital.

Magnetosfer (magnetosphere).

تقویم خورشیدی جلالی، دقیق‌ترین نظام زمان‌سنجی است.

The Jalali solar calendar is the most accurate timekeeping system.

Jalali refers to the specific historical version.

نورخوارگی مصنوعی با الهام از فرآیندهای خورشیدی ابداع شد.

Artificial photosynthesis was invented by inspiring from solar processes.

Noorkharagi (photosynthesis).

نوسانات درخشندگی خورشیدی در مقیاس‌های زمانی طولانی رخ می‌دهد.

Fluctuations in solar luminosity occur over long time scales.

Derakhshandegi (luminosity).

Common Collocations

انرژی خورشیدی

منظومه خورشیدی

پنل خورشیدی

تقویم خورشیدی

نیروگاه خورشیدی

خورشیدگرفتگی

باتری خورشیدی

تابش خورشیدی

سلول خورشیدی

آب‌گرمکن خورشیدی

Common Phrases

سال خورشیدی

— The solar year, used to define the calendar cycle.

سال ۱۴۰۳ یک سال خورشیدی است.

نور خورشیدی

— The light coming specifically from the sun.

نور خورشیدی برای ویتامین دی لازم است.

سیستم خورشیدی

— A general term for any system powered by the sun.

این سیستم خورشیدی هوشمند است.

پرتو خورشیدی

— A solar ray or beam of sunlight.

پرتو خورشیدی از پنجره گذشت.

چرخه خورشیدی

— The solar cycle, often used in astronomy.

چرخه خورشیدی یازده سال طول می‌کشد.

جرم خورشیدی

— Solar mass, a unit used in astrophysics.

این ستاره دو برابر جرم خورشیدی دارد.

باد خورشیدی

— Solar wind, particles emitted by the sun.

باد خورشیدی بر زمین اثر می‌گذارد.

ساعت خورشیدی

— A sundial or a solar-powered watch.

ساعت خورشیدی قدیمی در حیاط بود.

عینک خورشیدی

— A less common but technical term for sunglasses.

او عینک خورشیدی مخصوصی خرید.

گرمای خورشیدی

— Solar heat or thermal energy from the sun.

گرمای خورشیدی در کویر طاقت‌فرساست.

Often Confused With

خورشیدی vs آفتابی

Aftabi is for weather (sunny), Khorshidi is for technical/solar things.

خورشیدی vs شمسی

Shamsi is an Arabic loanword used mostly for the calendar.

خورشیدی vs نورانی

Noorani means luminous in general, not specifically solar.

Idioms & Expressions

"مثل خورشید روشن است"

— It is as clear as the sun (obvious). While it uses the noun, the concept is linked.

دروغ او مثل خورشید روشن است.

Informal

"خورشید پشت ابر نمی‌ماند"

— The sun won't stay behind the clouds (the truth will come out).

نگران نباش، خورشید پشت ابر نمی‌ماند.

Neutral

"ماه و خورشید"

— The moon and the sun (used to describe great beauty or a perfect pair).

آن دو مثل ماه و خورشید هستند.

Poetic

"زیر نور خورشید"

— Under the sun (everywhere/anything).

هیچ چیز تازه‌ای زیر نور خورشید نیست.

Neutral

"بچه‌ی خورشید"

— Child of the sun (someone very bright or lucky).

او واقعاً بچه‌ی خورشید است.

Informal

"خورشید تابان"

— The shining sun (often used as a metaphor for a great leader).

او خورشید تابان علم است.

Formal

"از خورشید هم روشن‌تر"

— Brighter than the sun (extremely obvious).

حقیقت از خورشید هم روشن‌تر است.

Neutral

"با طلوع خورشید"

— With the sunrise (at the very beginning).

با طلوع خورشید سفر را آغاز کردیم.

Neutral

"غروب خورشید"

— Sunset (the end of something).

این کار تا غروب خورشید تمام می‌شود.

Neutral

"پرستش خورشید"

— Sun worship (historically significant in Iran).

آیین‌های قدیمی شامل پرستش خورشید بود.

Academic

Easily Confused

خورشیدی vs خورشید

It is the root noun.

Khorshid is the noun (Sun), Khorshidi is the adjective (Solar).

خورشید می‌درخشد. (The sun shines.) vs انرژی خورشیدی. (Solar energy.)

خورشیدی vs آفتاب

Both refer to the sun.

Aftab is usually the sunlight or the sun as seen from earth; khorshid is the celestial body.

زیر آفتاب نشستم. (I sat under the sunlight.)

خورشیدی vs مهر

Ancient name for the sun.

Mehr is poetic or used for the month; khorshidi is scientific.

ماه مهر (The month of Mehr).

خورشیدی vs قمری

Both are used in calendars.

Khorshidi is solar; Ghamari is lunar.

تقویم قمری (Lunar calendar).

خورشیدی vs ستاره

The sun is a star.

Setare is any star; khorshidi is specific to our sun.

ستاره‌های دوردست (Distant stars).

Sentence Patterns

این [Noun] خورشیدی است.

این ساعت خورشیدی است.

[Noun] خورشیدی در [Location] است.

پنل خورشیدی روی سقف است.

ما از [Noun] خورشیدی استفاده می‌کنیم.

ما از انرژی خورشیدی استفاده می‌کنیم.

[Noun] خورشیدی می‌تواند [Verb].

توفان خورشیدی می‌تواند خطرناک باشد.

به دلیل [Noun] خورشیدی، [Result].

به دلیل تابش خورشیدی، هوا گرم است.

پارادایم [Noun] خورشیدی بر [Concept] اثر می‌گذارد.

پارادایم انرژی خورشیدی بر اقتصاد اثر می‌گذارد.

آیا [Noun] خورشیدی بهتر از [Noun] است؟

آیا انرژی خورشیدی بهتر از نفت است؟

من [Noun] خورشیدی را دیدم.

من خورشیدگرفتگی را دیدم.

Word Family

Nouns

خورشید (Sun)

خورشیدگرفتگی (Solar Eclipse)

خاور (East - related root)

Adjectives

خورشیدی (Solar)

آفتابی (Sunny)

نور (Light)

گرما (Heat)

فضا (Space)

سیاره (Planet)

ستاره (Star)

How to Use It

frequency

High in science, technology, and news; Moderate in daily life.

Common Mistakes

هوا خورشیدی است → هوا آفتابی است
You cannot use 'khorshidi' to describe the weather. Use 'aftabi' (sunny) instead.
خورشیدی پنل → پنل خورشیدی
In Persian, the adjective comes after the noun. You must use the Ezafe construction.
سال شمسی → سال خورشیدی (Both are okay, but avoid mixing them in the same text)
While 'shamsi' is common, 'khorshidi' is the more Persian term. Be consistent in your choice.
عینک خورشیدی → عینک آفتابی
While technically correct, nobody says 'eynak-e khorshidi' for sunglasses in daily life.
منظومه خورشید → منظومه خورشیدی
You must use the adjective form 'khorshidi', not the noun 'khorshid', to describe the system.

Tips

The Ezafe Rule

Always remember the short 'e' sound (Ezafe) when connecting a noun to 'khorshidi'. For example: 'energy-ye khorshidi'.

Technical vs Weather

Use 'khorshidi' for things that *use* the sun's power and 'aftabi' for things that are *in* the sun.

Calendar Awareness

When you see a date in Iran, it is usually 'khorshidi'. To convert it to Western dates, you usually add 621 or 622 years.

The Final 'i'

Make sure the final 'i' is long. If you say 'khorshid', you are just saying 'sun'.

Solar Gadgets

If a gadget is solar-powered, just add 'khorshidi' after its name. Example: 'radio-ye khorshidi'.

Spelling the 'Sh'

The 'sh' sound in the middle is written with the letter 'shin' (ش), which has three dots.

Astronomy Terms

Learn 'Manzume-ye Khorshidi' first; it's the most common astronomical use of the word.

Green Energy

In environmental contexts, 'khorshidi' is almost always paired with 'energy' or 'niroogah' (power plant).

Pure Persian

Using 'khorshidi' instead of 'shamsi' is often seen as a sign of using 'pure' Persian (Persian-e Sareh).

News Keywords

When listening to news about energy, listen for 'khorshidi' as a keyword for solar power.

Memorize It

Mnemonic

Imagine a **Khor** (core) of a star that is **Shi**ning **Di**rectly at you. Khor-shi-di.

Visual Association

Picture a huge solar panel in the shape of a golden sun in the middle of a desert.

Word Web

Sun Solar Panel Solar System Persian Calendar Energy Radiation Eclipse Light

Challenge

Try to find three items in your house that could be 'khorshidi' and name them in Persian.

Word Origin

The word originates from Middle Persian 'xwarxšēd'. The first part 'xwar' descends from Proto-Indo-European 'sāwel-', the root for 'sun' (cognate with English 'sun' and Latin 'sol'). The second part 'xšēd' means 'shining' or 'brilliant'.

Original meaning: The Brilliant Sun.

Indo-European -> Indo-Iranian -> Iranian -> Persian.

Cultural Context

No specific sensitivities; the word is scientifically and culturally neutral/positive.

English speakers use 'solar' for everything technical. Persian distinguishes between weather (aftabi) and technical (khorshidi).

The Jalali Calendar (the basis for the khorshidi calendar). Omar Khayyam (the astronomer who refined the solar calendar). Solar Power projects in the Dasht-e Kavir desert.

Practice in Real Life

Real-World Contexts

Science Class

منظومه خورشیدی چند سیاره دارد؟
خورشید مرکز منظومه خورشیدی است.
فاصله زمین تا خورشید چقدر است؟
زمین به دور خورشید می‌چرخد.

Environmental Discussion

انرژی خورشیدی پاک است.
باید پنل خورشیدی نصب کنیم.
هزینه انرژی خورشیدی کم شده است.
نیروگاه خورشیدی آلودگی ندارد.

Date and Time

امروز چه سال خورشیدی است؟
تقویم خورشیدی دقیق است.
سال خورشیدی با نوروز شروع می‌شود.
تفاوت سال قمری و خورشیدی چیست؟

Shopping for Gadgets

این چراغ خورشیدی است؟
باتری خورشیدی چقدر شارژ نگه می‌دارد؟
آیا این شارژر خورشیدی کار می‌کند؟
قیمت پنل خورشیدی کوچک چقدر است؟

Astronomy News

خورشیدگرفتگی فردا دیده می‌شود.
توفان خورشیدی در راه است.
تاج خورشیدی بسیار داغ است.
لکه خورشیدی جدیدی دیده شد.

Conversation Starters

"آیا در کشور شما از انرژی خورشیدی زیاد استفاده می‌شود؟"

"به نظر شما آینده متعلق به ماشین‌های خورشیدی است؟"

"آیا تا به حال خورشیدگرفتگی کامل را دیده‌اید؟"

"نظر شما درباره دقت تقویم خورشیدی ایران چیست؟"

"اگر می‌توانستید، روی سقف خانه‌تان پنل خورشیدی نصب می‌کردید؟"

Journal Prompts

درباره اهمیت انرژی خورشیدی برای نجات زمین بنویسید.

یک روز در منظومه خورشیدی را توصیف کنید که در آن به سیارات مختلف سفر می‌کنید.

چرا تقویم خورشیدی برای فرهنگ ایرانی مهم است؟

تکنولوژی‌های خورشیدی چگونه زندگی ما را در ده سال آینده تغییر می‌دهند؟

احساس خود را هنگام تماشای یک خورشیدگرفتگی توصیف کنید.

Frequently Asked Questions

10 questions

Khorshidi is a pure Persian word, while Shamsi is derived from Arabic. Both mean 'solar'. In modern Iran, Khorshidi is preferred for scientific and technical terms, while Shamsi is still very common for the official name of the calendar (Hejri-ye Shamsi).

No, that is a common mistake. For a sunny day, you must use 'aftabi'. Khorshidi is a relational adjective like 'solar' in English. You wouldn't say 'It is a solar day today' in English either.

The phrase is 'Manzume-ye Khorshidi'. 'Manzume' refers to a system or a collection of things organized together.

It is the official calendar of Iran and Afghanistan. It is a solar calendar, meaning it follows the sun, and its new year (Nowruz) starts exactly at the spring equinox.

It is a neutral to formal word. It is the standard term used in textbooks, news, and technical manuals.

It is a voiceless velar fricative, similar to the 'ch' in the Scottish word 'loch' or the German word 'Bach'.

Only metaphorically or as a name, but it is not common. A person's face might be described as 'sun-like' using other adjectives, but 'khorshidi' is usually for objects or systems.

They are called 'panel-ha-ye khorshidi' or 'safahat-e khorshidi'.

The sun has been a symbol of Iranian identity for thousands of years, appearing on flags and in ancient Zoroastrian traditions, which is why words related to it are so numerous.