E-phĕm'e-rĭs, n.

n.; pl. ĒPH-E-MĒR/Ĭ-DĒS. [Gr. ἐφημερίς, from ἐφήμερος.]

1. A journal or account of daily transactions; a diary. Johnson.
2. (Astron.) (a.) 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. (b.) Any tabular statement of the assigned places of a heavenly body, as a planet or comet, on several successive days.
3. (Literature.) A book or collection of notices indicating events that have occurred on the same day in different years.