sidereal year

noun

Definition of sidereal year

  1. :  the time in which the earth completes one revolution in its orbit around the sun measured with respect to the fixed stars :  365 days, 6 hours, 9 minutes, and 9.5 seconds of mean time

1765

First Known Use of sidereal year

1765


Learn More about sidereal year


Seen and Heard

What made you want to look up sidereal year? Please tell us where you read or heard it (including the quote, if possible).