Sidereal
adjective
Relating to stars or constellations.
The scientist explained the sidereal time to his students.
Often appears as...
- sidereal day
- sidereal time
Usage tips
Scientific
adjective
Measured by the apparent motion of the stars.
The sidereal period of the moon is about 27.3 days.
Often appears as...
- sidereal period
- sidereal year
Usage tips
Scientific
adjective
Used in reference to timekeeping methods that are based on the stars.
Sidereal time is used in astronomy and has a day of 23 hours, 56 minutes and 4.1 seconds.
Often appears as...
- sidereal clock
- sidereal hour
Usage tips
Technical
adjective
Relating to stars or constellations.
The scientist explained the sidereal time to his students.
Often appears as...
- sidereal day
- sidereal time
Usage tips
Scientific
adjective
Measured by the apparent motion of the stars.
The sidereal period of the moon is about 27.3 days.
Often appears as...
- sidereal period
- sidereal year
Usage tips
Scientific
adjective
Used in reference to timekeeping methods that are based on the stars.
Sidereal time is used in astronomy and has a day of 23 hours, 56 minutes and 4.1 seconds.
Often appears as...
- sidereal clock
- sidereal hour
Usage tips
Technical
Definition 1 of 3
Pro Tip 1/2Astronomy Term
Primarily used in astronomy to discuss phenomena related to the stars.
The astrophysicist spoke about sidereal rotations.
Pro Tip 2/2Not Solar
Don't confuse 'sidereal' with 'solar', which relates to the sun.
Sidereal is concerned with stars, unlike solar calendars.
Pro Tip 1/2Astronomy Term
Primarily used in astronomy to discuss phenomena related to the stars.
The astrophysicist spoke about sidereal rotations.
Pro Tip 2/2Not Solar
Don't confuse 'sidereal' with 'solar', which relates to the sun.
Sidereal is concerned with stars, unlike solar calendars.
Pro Tip 1/2Astronomy Term
Primarily used in astronomy to discuss phenomena related to the stars.
The astrophysicist spoke about sidereal rotations.
Pro Tip 2/2Not Solar
Don't confuse 'sidereal' with 'solar', which relates to the sun.
Sidereal is concerned with stars, unlike solar calendars.
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