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二氧化氮

Mandarin · pinyin èr yǎng huà dàn

nitrogen dioxide

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Characters in this entry

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

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4–3–4–4 · er4 yang3 hua4 dan4

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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) nitrogen dioxide

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

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