一氧化二氮

Mandarin · pinyin yī yǎng huà èr dàn

Meanings

  1. nitrous oxide N2O
  2. 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)
Written characters and their own readings; the entry’s pronunciation is shown above.

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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.

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

jat1 joeng5 faa3 ji6 daam6

Pleco · CC BY-SA 3.0 · Word reading; meanings not aligned.

Wiktionary English definitions · Chinese section

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

noun

  1. (inorganic chemistry) nitrous oxide

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

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