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Answer for the clue "Gas in the atmosphere ", 14 letters:
carbon dioxide

Alternative clues for the word carbon dioxide

Word definitions for carbon dioxide in dictionaries

WordNet Word definitions in WordNet
n. a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis [syn: CO2 , carbonic acid gas ]

Wiktionary Word definitions in Wiktionary
n. (context inorganic compound English) The normal oxide of carbon, CO 2 ; a colorless, odorless gas formed during respiration and combustion and consumed by plants during photosynthesis.

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Carbonic \Car*bon"ic\, a. [Cf. F. carbonique. See Carbon .] (Chem.) Of, pertaining to, or obtained from, carbon; as, carbonic oxide. Carbonic acid (Chem.), an acid HO.CO.OH , not existing separately, which, combined with positive or basic atoms or radicals, ...

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1869, so called because it consists of one carbon and two oxygen atoms. The chemical was known since mid-18c. under the name fixed air ; later as carbonic acid gas (1791). "The term dioxide for an oxide containing two atoms of oxygen came into use in the ...

Wikipedia Word definitions in Wikipedia
This page provides supplementary chemical data on carbon dioxide .

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ Carbon Dioxide An increase in the amount of carbon dioxide is responsible for about half the total warming. ▪ Catalysts convert carbon monoxide into carbon dioxide , which is less toxic, but equally polluting to the environment. ...