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ephemeris n. 位置推算历 位置推算历 ephemeris n 1: an annual publication containing astronomical tables that give the positions of the celestial bodies throughout the year; "today computers calculate the ephemerides" Ephemeris \E*phem"e*ris\, n.; pl. {Ephemerides}. [L., a diary,
Gr. ?, also, a calendar, fr. ?. See {Ephemera}.] 1. A diary; a journal. --Johnson. [1913 Webster] 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. [1913 Webster] 3. (Literature) A collective name for reviews, magazines, and all kinds of periodical literature. --Brande & C. [1913 Webster]
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