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Ephemeris time   Listen
Ephemeris time

noun
1.
(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.  Synonyms: TDT, terrestrial dynamical time, terrestrial time, TT.






WordNet 3.0 © 2010 Princeton University








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Words linked to "Ephemeris time" :   terrestrial time, unit of time, time unit, TT, uranology, astronomy, terrestrial dynamical time, TDT



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