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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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