noun
- The cardinal number that is the sum of three and one.
- synonyms: four, IV, tetrad, quatern, quaternion, quaternary, quaternity, quartet, quadruplet, foursome, Little Joe
adjective
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). 4. Retrieved September 20, 2026, from http://smartdefine.org/4/definitions/1166916 |
| Chicago | WordNet. 2010. "4" http://smartdefine.org/4/definitions/1166916 (accessed September 20, 2026). |
| Harvard | WordNet 2010, 4, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/4/definitions/1166916>. |
| MLA | WordNet. "4" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/4/definitions/1166916> |