a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis
[ Syn: carbon dioxide , carbon dioxide , co2 , co2 , carbonic acid gas , 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
[ Syn: carbon dioxide , carbon dioxide , co2 , co2 , carbonic acid gas , carbonic acid gas ]