- The uttermost point to which one can go or attain; hence, the summit of achievement; the highest point or degree; the acme.
- A prohibition against proceeding further; an insuperable obstacle or limiting condition.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). ne plus ultra. Retrieved September 25, 2026, from http://smartdefine.org/ne_plus_ultra/definitions/2036058 |
| Chicago | Webster's. 2011. "ne plus ultra" http://smartdefine.org/ne_plus_ultra/definitions/2036058 (accessed September 25, 2026). |
| Harvard | Webster's 2011, ne plus ultra, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/ne_plus_ultra/definitions/2036058>. |
| MLA | Webster's. "ne plus ultra" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/ne_plus_ultra/definitions/2036058> |