Definition of carbon dioxide in English:

carbon dioxide

Line breaks: car¦bon di|ox¦ide

noun

[mass noun]
  • A colourless, odourless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air (about 0.03 per cent) and is absorbed by plants in photosynthesis.
    • Chemical formula: CO2
    More example sentences
    • This fixed air is carbon dioxide, into which carbonates decompose when heated.
    • For example, plants give out oxygen and animals expel carbon dioxide and methane.
    • This difference makes it possible for organisms to build up carbon compounds from carbon dioxide.

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