Sidereal Year Definition
noun
The time required for one complete revolution of the earth about the sun, relative to the fixed stars, or 365 days, 6 hours, 9 minutes, 9.54 seconds in units of mean solar time.
American Heritage
Other Word Forms of Sidereal Year
Noun
Singular:
sidereal year
Plural:
sidereal-yearsRelated Articles
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