ephemeris Meaning, Definition & Usage

  1. noun an annual publication containing astronomical tables that give the positions of the celestial bodies throughout the year
    • today computers calculate the ephemerides

WordNet

E*phem"e*ris noun
Etymology
L., a diary, Gr. , also, a calendar, fr. . See Ephemera.
Wordforms
plural Ephemerides
Definitions
  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.

Webster 1913