What does "co2" mean?

a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis

What is a synonym for "co2"?

Common synonyms include: carbon dioxide, carbon dioxide, carbonic acid gas.

Co2

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Definitions

Noun

1
a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis wordnet

Synonyms

All synonyms

carbon dioxide carbon dioxide carbonic acid gas

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.