carbon dioxide

Pronunciation

• (UK) IPA ^(key): /ˌkɑːbən dʌɪˈɒksʌɪd/
• (US) IPA ^(key): /ˈˌkɑrbən daɪˈɑksaɪd/

• Audio (US)

  (file)

Noun

Singular carbon dioxide

Plural none

1. (inorganic compound) Carbon dioxide is a colorless, odorless gas formed during respiration and combustion and consumed by plants during photosynthesis.

   Carbon dioxide makes up less than 1% of the atmosphere.