éphéméride

Borrowed from the Latin ephēmeris, itself a borrowing from the Ancient Greek ἐφημερῐ́ς (ephēmerís).

• IPA^(key): /e.fe.me.ʁid/

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éphéméride m or f (plural éphémérides)

1. block or tear-off calendar; the events that took place on a particular date in previous years
2. (traditionally in the plural, astronomy) ephemeris (table giving the apparent position of celestial bodies throughout the year)

• “éphéméride” in Émile Littré, Dictionnaire de la langue française, 1872–1877.
• “éphéméride”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.