sidereal

IPA: sˈɪdˈɪriʌɫ

Of or relating to the stars.
(astronomy) Relating to a measurement of time relative to the position of the stars.
(astronomy) Relating to a measurement of time relative to the point of the vernal equinox.

Examples of "sidereal" in Sentences

Astronomers use sidereal time to measure the position of stars in the night sky
The sidereal day is slightly shorter than the solar day due to Earth's orbit around the Sun
The sidereal month refers to the time it takes for the Moon to complete one orbit around the Earth relative to the stars
Sidereal astrology is based on the position of the planets and stars at a specific moment in time
In sidereal astronomy, the sky is divided into 12 constellations, each associated with different time periods throughout the year