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 | ||