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對合

简对合 · 繁對合

Mandarin · pinyin duì hé

a profit equal to the amount one invested
(math.) involution

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Characters in this entry

對: duì · correct, right; facing, opposed
合: hé · combine, unite, join; gather
对: duì · correct, right; facing, opposed

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Mandarin tones

4–2 · dui4 he2

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對合 · find source passages ↗ · 对合 · find source passages ↗

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Wiktionary English definitions · Chinese section

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

noun

(mathematics) involution

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

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