DICTIONARY · CC-CEDICT

無理數

简无理数 · 繁無理數

Mandarin · pinyin wú lǐ shù

irrational number

Full entryShow on map

Characters in this entry

無: Look up this written character
理: lǐ · reason, logic; manage
數: shù · number; several; count; fate
无: wú · negative, no, not; Kangxi radical 71
数: shù · number; several, count; fate

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

Explore the spelling

Mandarin tones

2–3–4 · wu2 li3 shu4

Compare attested words with these syllables ↗

Dictionary tones. Connected speech can change their realization.

Connected dictionary

4character 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.

無理數 · find source passages ↗ · 无理数 · find source passages ↗

Explore Classical grammar ↗

Compare dictionary sources Wiktionary · 1 sense · 1 Cantonese reading

Rime Cantonese 粵拼

mou4 lei5 sou3

Cantonese word readings for 無理數. This lexicon supplies readings, not definitions.

CanCLID contributors · CC BY 4.0 · source & license · Data pack

Wiktionary English definitions · Chinese section

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

noun

(mathematics) irrational number

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

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