Ephemeris \E*phem"e*ris\, n.; pl. Ephemerides. [L., a diary, Gr. ?, also, a calendar, fr. ?. See Ephemera.]

1. A diary; a journal. --Johnson.

2. (Anat.)
   (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 collective name for reviews, magazines, and all kinds of periodical literature. --Brande & C.

Source: Webster's Revised Unabridged Dictionary (1913)