- (a.) Next in order after the sixty-ninth; as, a man in the seventieth year of his age.
- (a.) Constituting or being one of seventy equal parts.
- (n.) The quotient of a unit divided by seventy; one of seventy equal parts or fractions.
- (n.) One next in order after the sixty-ninth.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). seventieth. Retrieved September 21, 2026, from http://smartdefine.org/seventieth/definitions/2060873 |
| Chicago | Webster's. 2011. "seventieth" http://smartdefine.org/seventieth/definitions/2060873 (accessed September 21, 2026). |
| Harvard | Webster's 2011, seventieth, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/seventieth/definitions/2060873>. |
| MLA | Webster's. "seventieth" 28 May 2011. Web. 21 September 2026. <http://smartdefine.org/seventieth/definitions/2060873> |