noun
- Someone whose age is in the nineties.
adjective
- Being from 90 to 99 years old.
- usage: "the nonagenarian inhabitants of the nursing home"
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). nonagenarian. Retrieved September 21, 2026, from http://smartdefine.org/nonagenarian/definitions/1179230 |
| Chicago | WordNet. 2010. "nonagenarian" http://smartdefine.org/nonagenarian/definitions/1179230 (accessed September 21, 2026). |
| Harvard | WordNet 2010, nonagenarian, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/nonagenarian/definitions/1179230>. |
| MLA | WordNet. "nonagenarian" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/nonagenarian/definitions/1179230> |