- (a.) Belonging to the Crustacea; crustacean.
- (a.) Pertaining to or of the nature of, crust or shell; having a crustlike shell.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). crustaceous. Retrieved September 25, 2026, from http://smartdefine.org/crustaceous/definitions/1993393 |
| Chicago | Webster's. 2011. "crustaceous" http://smartdefine.org/crustaceous/definitions/1993393 (accessed September 25, 2026). |
| Harvard | Webster's 2011, crustaceous, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/crustaceous/definitions/1993393>. |
| MLA | Webster's. "crustaceous" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/crustaceous/definitions/1993393> |