noun
- Position 18 in a countable series of things.
adjective
- Coming next after the seventeenth in position.
- synonyms: 18th
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). Eighteenth. Retrieved September 20, 2026, from http://smartdefine.org/eighteenth/definitions/1173140 |
| Chicago | WordNet. 2010. "Eighteenth" http://smartdefine.org/eighteenth/definitions/1173140 (accessed September 20, 2026). |
| Harvard | WordNet 2010, Eighteenth, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/eighteenth/definitions/1173140>. |
| MLA | WordNet. "Eighteenth" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/eighteenth/definitions/1173140> |