from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A table giving the coordinates of a celestial body at a number of specific times during a given period.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A journal or diary.
- n. A table giving the apparent position of celestial bodies throughout the year; normally given as right ascension and declination
- n. Software that calculates the apparent position of celestial bodies.
from the GNU version of the Collaborative International Dictionary of English
- 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.”
- 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.
from The Century Dictionary and Cyclopedia
- n. A daily record; a diary; a chronological statement of events by days; particularly, an almanac; a calendar: in this sense formerly sometimes with the plural as singular.
- n. In astronomy, a table or a collection of tables or data showing the daily positions of the planets or heavenly bodies, or of any number of them; specifically, an astronomical almanac, exhibiting the places of the heavenly bodies throughout the year, and giving other information regarding them, for the use of the astronomer and navigator.
- n. Anything lasting only for a day or for a very brief period; something that is ephemeral or transient; especially, a publication or periodical of only temporary interest or very short duration.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an annual publication containing astronomical tables that give the positions of the celestial bodies throughout the year
Late Latin ephēmeris, from Greek, diary, from ephēmeros, daily; see ephemeral.(American Heritage® Dictionary of the English Language, Fourth Edition)
Modern Latin, from Ancient Greek ἐφημερίς ("diary, calendar"), from ἐφήμερος ("daily"). (Wiktionary)