- (n.) A publication giving the computed places of the heavenly bodies for each day of the year, with other numerical data, for the use of the astronomer and navigator; an astronomical almanac; as, the "American Ephemeris and Nautical Almanac.".
- (n.) A collective name for reviews, magazines, and all kinds of periodical literature.
- (n.) A diary; a journal.
- (n.) Any tabular statement of the assigned places of a heavenly body, as a planet or comet, on several successive days.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). ephemeris. Retrieved September 28, 2026, from http://smartdefine.org/ephemeris/definitions/2004034 |
| Chicago | Webster's. 2011. "ephemeris" http://smartdefine.org/ephemeris/definitions/2004034 (accessed September 28, 2026). |
| Harvard | Webster's 2011, ephemeris, Smart Define, viewed 28 September, 2026, <http://smartdefine.org/ephemeris/definitions/2004034>. |
| MLA | Webster's. "ephemeris" 27 May 2011. Web. 28 September 2026. <http://smartdefine.org/ephemeris/definitions/2004034> |