sidereal month


sidereal month

noun

Definition of SIDEREAL MONTH

: the mean time of the moon's revolution in its orbit with reference to a star's position : 27 days, 7 hours, 43 minutes, 11.5 seconds of mean time

First Known Use of SIDEREAL MONTH

1868

Browse

Next Word in the Dictionary: sidereal noon
Previous Word in the Dictionary: sidereal minute
All Words Near: sidereal month

Seen & Heard

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

Test Your Vocabulary

Take Our 10-Question Quiz

Name That Thing

Take our visual vocab quiz

Test Your Knowledge »

True or False?

A quick quiz about stuff worth knowing

Take It Now »

Join Us on FB & Twitter

Get the Word of the Day and More

Facebook | Twitter

Get Our Free Apps

Voice Search, Favorites,
Word of the Day, and More

iPhone | iPad | Android | More