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一氧化二氮

Mandarin · pinyin yī yǎng huà èr dàn

nitrous oxide N2O
laughing gas

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Characters in this entry

一: yī · one; a, an; alone
氧: yǎng · oxygen (element 8, O)
化: huà · change, convert, reform; -ize
二: èr · two; twice
氮: dàn · nitrogen (element 7, N)

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Mandarin tones

1–3–4–4–4 · yi1 yang3 hua4 er4 dan4

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Compare dictionary sources Wiktionary · 1 sense · 1 Cantonese reading

Rime Cantonese 粵拼

jat1 joeng5 faa3 ji6 daam6

Cantonese word readings for 一氧化二氮. This lexicon supplies readings, not definitions.

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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

(inorganic chemistry) nitrous oxide

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

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