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We found 15 dictionaries with English definitions that include the word ephemeris time: Click on the first link on a line below to go directly to a page where "ephemeris time" is defined. General (12 matching dictionaries) ephemeris time: American Heritage Dictionary of the English Language [home, info] ephemeris time: Collins English Dictionary [home, info] ephemeris time: Vocabulary.com [home, info] ephemeris time: Merriam-Webster's Online Dictionary, 11th Edition [home, info] ephemeris time: Infoplease Dictionary [home, info] ephemeris time: Dictionary.com [home, info] Ephemeris Time: Wikipedia, the Free Encyclopedia [home, info] Ephemeris time: Rhymezone [home, info] ephemeris time: Free Dictionary [home, info] ephemeris time: Mnemonic Dictionary [home, info] ephemeris time: LookWAYup Translating Dictionary/Thesaurus [home, info] ephemeris time: Dictionary/thesaurus [home, info] Computing (1 matching dictionary) ephemeris time: Encyclopedia [home, info] Science (2 matching dictionaries) Ephemeris Time: Eric Weisstein's World of Astronomy [home, info] Ephemeris Time: Extragalactic Astronomy [home, info]

Quick definitions from WordNet (Ephemeris time) ▸ noun:  (astronomy) a measure of time defined by Earth's orbital motion; terrestrial time is mean solar time corrected for the irregularities of the Earth's motions