carbon dioxide (co
1Carbon dioxide — Carbon dioxide …
2carbon dioxide — UK US noun [U] (also carbon, ABBREVIATION CO2) ► ENVIRONMENT the gas formed when carbon is burned, or when people or animals breathe out. Carbon dioxide is a greenhouse gas: »The UK plans to reduce carbon dioxide emissions by 60% by 2050. »Hotter …
3carbon dioxide — n a heavy colorless gas CO2 that does not support combustion, dissolves in water to form carbonic acid, is formed esp. in animal respiration and in the decay or combustion of animal and vegetable matter, is absorbed from the air by plants in… …
4Carbon dioxide — Carbon Car bon (k[aum]r b[o^]n), n. [F. carbone, fr. L. carbo coal; cf. Skr. [,c]r[=a] to cook.] (Chem.) 1. An elementary substance, not metallic in its nature, which is present in all organic compounds. Atomic weight 11.97. Symbol C. it is… …
5carbon dioxide — n. a colorless, odorless, incombustible gas, CO2, somewhat heavier than air, that is a product of respiration and combustion: produced commercially and used widely in fire extinguishers, carbonated beverages, etc.: in photosynthesis, carbon… …
6carbon dioxide — , carbon monoxide Carbon dioxide is the gas people exhale; carbon monoxide is the highly poisonous gas associated with car exhausts …
7Carbon dioxide — Dioxide Di*ox ide (?; 104), n. [Pref. di + oxide.] (Chem.) (a) An oxide containing two atoms of oxygen in each molecule; binoxide. (b) An oxide containing but one atom or equivalent of oxygen to two of a metal; a suboxide. [Obs.] [1913 Webster]… …
8carbon dioxide — 1873, so called because it consists of one carbon and two oxygen atoms. Known since mid 18c. under the name fixed air …
9carbon dioxide — ► NOUN ▪ a colourless, odourless gas produced by burning carbon and organic compounds and by respiration, and absorbed by plants in photosynthesis …
10carbon dioxide — a colorless, odorless, incombustible gas, CO2, present in the atmosphere and formed during respiration, usually obtained from coal, coke, or natural gas by combustion, from carbohydrates by fermentation, by reaction of acid with limestone or… …
