How to pronounce Sidereal?

The correct way to pronounce Sidereal is [sih-DEER-ee-uhl]. Emphasis is on the 2 syllable. To learn how to pronounce Sidereal, listen and repeat:

What's the definition of Sidereal?

Sidereal – sidereal refers to anything related to the stars or constellations. It is often used in astronomy to describe time measured by the position of stars. Sidereal time is different from solar time, as it is based on the earth's rotation relative to distant stars. This term encompasses anything pertaining to the heavens and celestial bodies. In essence, sidereal emphasizes the cosmic perspective rather than the familiar solar cycle we experience on earth.

Examples of usage of Sidereal

  1. The sidereal month is approximately 27.3 days long, which is the time it takes for the moon to orbit the Earth relative to the stars.
  2. Astronomers often use sidereal time for observations because it aligns better with the positions of celestial objects in the night sky.
  3. In astrology, some practitioners calculate sidereal zodiac signs based on the positions of stars rather than the traditional tropical zodiac.
  4. The sidereal day is about 23 hours, 56 minutes, and 4 seconds, which is shorter than the solar day we commonly use.
  5. Navigators may rely on sidereal navigation to determine their position using the stars rather than GPS.