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二氧化碳

Mandarin · pinyin èr yǎng huà tàn

carbon dioxide CO2

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Characters in this entry

二: èr · two; twice
氧: yǎng · oxygen (element 8, O)
化: huà · change, convert, reform; -ize
碳: tàn · carbon (element 6, C)

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Mandarin tones

4–3–4–4 · er4 yang3 hua4 tan4

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Compare dictionary sources Wiktionary · 1 sense · 1 Cantonese reading

Rime Cantonese 粵拼

ji6 joeng5 faa3 taan3

Cantonese word readings for 二氧化碳. 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

carbon dioxide

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

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