Definition of sidereal month in English:

sidereal month

Syllabification: si·de·re·al month


  • The time it takes the moon to orbit once around the earth with respect to the stars (approximately 27 1/ 4 days).
    More example sentences
    • How would the synodic and sidereal months differ if the moon orbited the Earth in the opposite direction?
    • During the sidereal months of Sagittarius and Capricorn, the Sun is nearest to the earth.
    • Thus, a lunar month is longer than a sidereal month by about 1/12 th of a month, or two-and-a-half days roughly.

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Word of the day milord
Pronunciation: mɪˈlɔːd
used to address an English nobleman