1. an annual publication containing astronomical tables that give the positions of the celestial bodies throughout the year
; - Example: "today computers calculate the ephemerides"
The Collaborative International Dictionary of English v.0.48:
Ephemeris \E*phem"e*ris\, n.; pl. Ephemerides. [L., a diary,
Gr. ?, also, a calendar, fr. ?. See Ephemera.]
1. A diary; a journal. --Johnson.
(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
3. (Literature) A collective name for reviews, magazines, and
all kinds of periodical literature. --Brande & C.
WordNet (r) 3.0 (2006):
n 1: an annual publication containing astronomical tables that
give the positions of the celestial bodies throughout the
year; "today computers calculate the ephemerides"