HyperDicEnglishSIDER ... sidereal day

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Related WikiPedia: sidereal day
English 1 sense of the expression sidereal day:
NOUNtimesidereal day, daythe time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day
Englishsidereal day: 1 sense noun 1, time
MeaningThe time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day.
Synonymday
Broadersidereal timeMeasured by the diurnal motion of stars
time unit, unit of timeA unit for measuring time periods
Spanishdía sideral
Catalandia sideral, dia sideri

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