noun
- The cardinal number that is the sum of ten and one.
- The 14th letter of the Greek alphabet.
adjective
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). xi. Retrieved September 20, 2026, from http://smartdefine.org/xi/definitions/1188516 |
| Chicago | WordNet. 2010. "xi" http://smartdefine.org/xi/definitions/1188516 (accessed September 20, 2026). |
| Harvard | WordNet 2010, xi, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/xi/definitions/1188516>. |
| MLA | WordNet. "xi" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/xi/definitions/1188516> |