DICTIONARY · CC-CEDICT

幾何光學

简几何光学 · 繁幾何光學

Mandarin · pinyin jǐ hé guāng xué

geometric optics

Full entryShow on map

Characters in this entry

幾: jǐ · how many? how much?; a few, some
何: hé · what, why, where, which, how
光: guāng · light, brilliant, shine; only
學: xué · learning, knowledge; school
几: jǐ · small table
学: xué · learning, knowledge; school

Written characters and their own readings; the entry’s pronunciation is shown above.

Explore the spelling

Mandarin tones

3–2–1–2 · ji3 he2 guang1 xue2

Compare attested words with these syllables ↗

Dictionary tones. Connected speech can change their realization.

Connected dictionary

6character links

Explore word families ↗Compare pronunciations ↗Open character structure ↗

Counts describe dictionary records, not word frequency or semantic similarity. Source identities stay separate.

Read this spelling in Classical texts

Follow a written form into the eight pinned witnesses: Analects, Mencius, Laozi, Zhuangzi, Xunzi, Han Feizi, Sunzi and the Mao Shijing. A match is a place to investigate; it does not prove that a modern dictionary sense fits the passage.

幾何光學 · find source passages ↗ · 几何光学 · find source passages ↗

Explore Classical grammar ↗

Compare dictionary sources Wiktionary · 1 sense

Wiktionary English definitions · Chinese section

Independent source senses for this spelling, with usage labels retained. Not matched to the pronunciation above.

noun

(physics) geometrical optics (the study of light propagation as geometrical constructs, such as rays, instead of waves or photons)

Source page · dump 2026-09-02 · Contributors & history

Wiktionary contributors · CC BY-SA 4.0 · source & license · Data pack