- (a.) Exceedingly variable; readily assuming different shapes or forms; as, an amoeba is a protean animalcule.
- (a.) Of or pertaining to Proteus; characteristic of Proteus.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). protean. Retrieved September 21, 2026, from http://smartdefine.org/protean/definitions/2050155 |
| Chicago | Webster's. 2011. "protean" http://smartdefine.org/protean/definitions/2050155 (accessed September 21, 2026). |
| Harvard | Webster's 2011, protean, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/protean/definitions/2050155>. |
| MLA | Webster's. "protean" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/protean/definitions/2050155> |