English noun: carbonic acid gas | |||
1. | carbonic acid gas (substance) a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis | ||
Synonyms | carbon dioxide, CO2 | ||
Broader (hypernym) | dioxide, greenhouse emission, greenhouse gas | ||
Narrower (hyponym) | blackdamp, chokedamp | ||