astronomy

Mount Meru

Mount Meru is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Mount Meru rather than just read about it. In short: Mount Meru (Sanskrit/Pali: मेरु)—also known as Sumeru, Sineru or Mahāmeru—is a sacred, five-peaked mountain present within Hindu, Jain and Buddhist cosmologies, revered as the centre of all physical, metaphysical and spiritual universes. It is professed to be located at the junction of the four great cosmic continents—Pubbavideha Dīpa, Uttarakuru Dīpa, Amaragoyāna Dīpa and Jambu Dīpa.

Key takeaways

Mount Meru belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Mount Meru to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Mount Meru from memory before moving on to harder problems.

Reference excerpt

Mount Meru (Sanskrit/Pali: मेरु)—also known as Sumeru, Sineru or Mahāmeru—is a sacred, five-peaked mountain present within Hindu, Jain and Buddhist cosmologies, revered as the centre of all physical, metaphysical and spiritual universes. It is professed to be located at the junction of the four great cosmic continents—Pubbavideha Dīpa, Uttarakuru Dīpa, Amaragoyāna Dīpa and Jambu Dīpa. Despite not having a clearly identified or known geophysical location, Mount Meru is, nevertheless, always thought of as being either in the Himalayan Mountains or the Aravalli Range (in western India). Mount Meru is also mentioned in scriptures of other, external religions to India, such as Taoism—which was influenced, itself, by the arrival of Buddhism in China. Many Hindu, Jain and Buddhist temples have been built as symbolic representations of Mount Meru. The Sumeru Throne (Chinese: 须弥座, xūmízuò) style is a common feature of Chinese pagodas. The highest point (the finial bud) on the pyatthat, a Burmese-style multi-tiered roof, represents Mount Meru.

Etymology Etymologically, 'meru' in Sanskrit means "high." The proper name of the mountain is Meru (Sanskrit: Meruparvata), to which the approbatory prefix su- is added, resulting in the meaning "excellent Mount Meru" or "sublime Mount Meru". Meru is also the name of the central bead in a mālā.

Geography The dimensions attributed to Mount Meru — which all refer to it as a part of the Cosmic Ocean, along with several other statements that describe it in geographically vague terms (for example, "the Sun along with all the planets circle the mountain") — make the determination of its location most difficult, according to most scholars. Several researchers identify Mount Meru or Sumeru with the Pamirs, northwest of Kashmir. Some scholars such as Michael Witzel and Georg Morgenstierne identify Mount Meru with Terich Mir, the highest peak in Hindu Kush located beyond Pamirs. The Suryasiddhanta mentions that Mt. Meru lies at the centre of the Earth ("bhuva-madhya") in the land of the Jambunad (Jambudvīpa). Narapatijayacharyasvarodaya, a ninth-century text, based on mostly unpublished texts of Yāmal Tantr, mentions:

"Sumeruḥ Prithvī-madhye shrūyate drishyate na tu" (Sumeru is heard to be at the centre of the Earth, but is not seen there). Several versions of cosmology can be found in existing Hindu texts. In all of them, cosmologically, the Meru mountain was also described as being surrounded by Mandrachala Mountain to the east, Suparshva Mountain to the west, Kumuda Mountain to the north, and Kailasha to the south.

In Buddhism

According to Buddhist cosmology, Mount Meru is at the centre of the world, and Jambūdvīpa is south of it. It is 80,000 yojanas wide and 80,000 yojanas high according to the Abhidharmakośabhāṣyam and 84,000 yojanas high according to the Long Āgama Sutra. At the peak of Mount Meru is Trāyastriṃśa, the realm where the ruler Śakra resides. The Sun and the Moon revolve around Mount Meru, and as the Sun passes behind it, it becomes nighttime. The mountain has four faces — each one made of a different material; the northern face is made of gold, the eastern one is made of crystal, the southern one is made of lapis lazuli, and the western one is made of ruby. In Vajrayāna, maṇḍala offerings often include Mount Meru, as they in part represent the entire universe. It is also believed that Mount Meru is the home of the Buddha Cakrasaṃvara.

In Hinduism

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Mount Meru

Start with the simplest possible case. Write down what Mount Meru claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Mount Meru before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Mount Meru ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Mount Meru

In research: Mount Meru appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Mount Meru in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Mount Meru is common in secondary-school and first-year university syllabi. It links to neighbouring topics Ancient Indian mountains, Buddhist cosmology, Buddhist mythology, so understanding it makes those chapters shorter.
In everyday life: Look for Mount Meru outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Mount Meru in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Mount Meru means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Mount Meru out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Mount Meru in simple terms?

Why does Mount Meru matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Mount Meru?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Mount Meru.