noun a diary; a journal.
2. ephemeris ·noun a collective name for reviews, magazines, and all kinds of periodical literature.
3. ephemeris ·noun any tabular statement of the assigned places of a heavenly body, as a planet or comet, on several successive days.
4. ephemeris ·noun 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.".