- (n.) The Pliocene period or deposits.
- (a.) Of, pertaining to or characterizing, the most recent division of the Tertiary age.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). pliocene. Retrieved September 23, 2026, from http://smartdefine.org/pliocene/definitions/2046539 |
| Chicago | Webster's. 2011. "pliocene" http://smartdefine.org/pliocene/definitions/2046539 (accessed September 23, 2026). |
| Harvard | Webster's 2011, pliocene, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/pliocene/definitions/2046539>. |
| MLA | Webster's. "pliocene" 27 May 2011. Web. 23 September 2026. <http://smartdefine.org/pliocene/definitions/2046539> |