- (a.) Of or pertaining to shells; consisted of a hard shell or having a hard shell.
- (a.) Having a dull red brick color or a brownish yellow color.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). testaceous. Retrieved September 21, 2026, from http://smartdefine.org/testaceous/definitions/2071456 |
| Chicago | Webster's. 2011. "testaceous" http://smartdefine.org/testaceous/definitions/2071456 (accessed September 21, 2026). |
| Harvard | Webster's 2011, testaceous, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/testaceous/definitions/2071456>. |
| MLA | Webster's. "testaceous" 28 May 2011. Web. 21 September 2026. <http://smartdefine.org/testaceous/definitions/2071456> |