HyperDic: terrestrial_time

English > 1 sense of the expression terrestrial time:
NOUNtimeterrestrial time, TT, terrestrial dynamical time, TDT, ephemeris time(astronomy) a measure of time defined by Earth's orbital motion
English > terrestrial time: 1 sense > noun 1, time
Meaning(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.
SynonymsTT, terrestrial dynamical time, TDT, ephemeris time
Categoryastronomy, uranologyThe branch of physics that studies celestial bodies and the universe as a whole
Broadertime unit, unit of timeA unit for measuring time periods
Catalantemps d'efemèrides, temps terrestre

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