noun
- The cardinal number that is the sum of three and one.
- synonyms: four, 4, IV, tetrad, quatern, quaternary, quaternity, quartet, quadruplet, foursome, Little Joe
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). quaternion. Retrieved September 21, 2026, from http://smartdefine.org/quaternion/definitions/1305006 |
| Chicago | WordNet. 2010. "quaternion" http://smartdefine.org/quaternion/definitions/1305006 (accessed September 21, 2026). |
| Harvard | WordNet 2010, quaternion, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/quaternion/definitions/1305006>. |
| MLA | WordNet. "quaternion" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/quaternion/definitions/1305006> |