noun
- An odorless very poisonous gas that is a product of incomplete combustion of carbon.
- synonyms: carbon monoxide, carbon monoxide gas, CO
- A hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition.
- synonyms: cobalt, Co, atomic number 27
- One who refuses to serve in the armed forces on grounds of conscience.
- synonyms: conscientious objector, CO
- A state in west central United States in the Rocky Mountains.
- synonyms: Colorado, Centennial State, CO
- Ratio of the adjacent side to the hypotenuse of a right-angled triangle.
- synonyms: cosine
- Lettuce with long dark-green leaves in a loosely packed elongated head.
- synonyms: cos lettuce, romaine, romaine lettuce
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). cos. Retrieved September 22, 2026, from http://smartdefine.org/cos/definitions/1221154 |
| Chicago | WordNet. 2010. "cos" http://smartdefine.org/cos/definitions/1221154 (accessed September 22, 2026). |
| Harvard | WordNet 2010, cos, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/cos/definitions/1221154>. |
| MLA | WordNet. "cos" 23 October 2010. Web. 22 September 2026. <http://smartdefine.org/cos/definitions/1221154> |