Word Study
co2
WORDNET DICTIONARY
Noun co2 has 1 sense
- co2(n = noun.substance) carbon dioxide, carbonic acid gas - a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis; Array has particulars: blackdamp, chokedamp
is a kind of dioxide, greenhouse emission, greenhouse gas
CIDE DICTIONARY
co2, n.
the chemical formula for carbon dioxide, a heavy odorless gas (CO2 ) formed during respiration and by the combustion or decomposition of organic substances; it is absorbed from the air by plants in photosynthesis. The formula itself, pronounced out, is often used instead of the full name, especially with reference to fire extinguishers using this gas for fire suppression; as, a CO2 extinguisher. [WordNet 1.5]
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