CARBON DIOXIDE

heavy colorless odorless gas which is released in animal respiration and the combustion of plant and animal matter (absorbed by plants in photosynthesis and used in making carbonated beverages)

Carbon dioxide is a chemical compound composed of two oxygen atoms covalently bonded to a single carbon atom. It is a gas at standard temperature and pressure and exists in Earth's atmosphere in this state. It is currently at a globally averaged concentration of approximately 375 ppm by volume in the Earth's atmosphere, although this varies both by location and time. Carbon dioxide's chemical formula is .
See more at Wikipedia.org...

Carbon dioxide n. A colorless, odorless, incombustible gas formed during respiration, combustion, and organic decomposition and used in inert [more]Carbon dioxide - Community and Resources

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
(synonym) CO2, carbonic acid gas
(hypernym) dioxide
(hyponym) chokedamp, blackdamp
(derivation) carbonate

chemical formula CO2, carbon dioxide is an asphyxiant with a TLV of 5,000ppm. Carbon dioxide is used in cleaning equipment and is a by product of photoresist stripping operations.