noun
- A heavy odorless colorless gas formed during respiration and by the decomposition of organic substances; absorbed from the air by plants in photosynthesis.
- synonyms: CO2, carbonic acid gas
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). carbon dioxide. Retrieved September 21, 2026, from http://smartdefine.org/carbon_dioxide/definitions/1248338 |
| Chicago | WordNet. 2010. "carbon dioxide" http://smartdefine.org/carbon_dioxide/definitions/1248338 (accessed September 21, 2026). |
| Harvard | WordNet 2010, carbon dioxide, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/carbon_dioxide/definitions/1248338>. |
| MLA | WordNet. "carbon dioxide" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/carbon_dioxide/definitions/1248338> |