noun
- An amino acid that is required by animals but that they cannot synthesize; must be supplied in the diet. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). essential amino acid. Retrieved September 25, 2026, from http://smartdefine.org/essential_amino_acid/definitions/1247510 |
| Chicago | WordNet. 2010. "essential amino acid" http://smartdefine.org/essential_amino_acid/definitions/1247510 (accessed September 25, 2026). |
| Harvard | WordNet 2010, essential amino acid, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/essential_amino_acid/definitions/1247510>. |
| MLA | WordNet. "essential amino acid" 23 October 2010. Web. 25 September 2026. <http://smartdefine.org/essential_amino_acid/definitions/1247510> |