| ephemeris | Origin: L, a diary, Gr, also, a calendar, fr. See Ephemera. 1. A diary; a journal. 2. <anatomy> 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." Any tabular statement of the assigned places of a heavenly body, as a planet or comet, on several successive days. 3. A collective name for reviews, magazines, and all kinds of periodical literature. Source: Websters Dictionary (01 Mar 1998) |
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| ephemeris | an annual publication containing tables that give the positions of the celestial bodies throughout the year |
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| ephemeris | (astronomy) a measure of time defined by Earth's orbital motion |
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