EPHEM'ERIS, n. plu. ephemer'ides. [Gr.] 1. A journal or account of daily transactions; a diary.2. In astronomy, an account of the daily state or positions of the planets or heavenly orbs; a table, or collection of tables, exhibiting the places of all the planets every day at noon. From these tables are calculated eclipses, conjunctions and other aspects of the planets.
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