Word Meaning

ephemeris definition and meaning

n. A diary; a journal.
n. 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."
n. Any tabular statement of the assigned places of a heavenly body, as a planet or comet, on several successive days.
n. A collective name for reviews, magazines, and all kinds of periodical literature.