(n.) An extinct gigantic quaternary mammal, allied to the ant-eaters and sloths. Its remains are found in South America.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). megatherium. Retrieved September 25, 2026, from http://smartdefine.org/megatherium/definitions/2031516 |
| Chicago | Webster's. 2011. "megatherium" http://smartdefine.org/megatherium/definitions/2031516 (accessed September 25, 2026). |
| Harvard | Webster's 2011, megatherium, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/megatherium/definitions/2031516>. |
| MLA | Webster's. "megatherium" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/megatherium/definitions/2031516> |