noun
- Any of a group of organic substances essential in small quantities to normal metabolism. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). vitamin. Retrieved September 21, 2026, from http://smartdefine.org/vitamin/definitions/1249684 |
| Chicago | WordNet. 2010. "vitamin" http://smartdefine.org/vitamin/definitions/1249684 (accessed September 21, 2026). |
| Harvard | WordNet 2010, vitamin, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/vitamin/definitions/1249684>. |
| MLA | WordNet. "vitamin" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/vitamin/definitions/1249684> |