(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. carbonic acid gas, CO2
[ちょりゅう, choryuu] (n, vs) accumulation; retention; collection; sequestration (as in carbon dioxide sequestration); storage (usually a liquid, e.g. rainwater, or behind a dam.)