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sidereal time

 

Definitions from WordNet

Noun sidereal time has 1 sense
  1. sidereal time - measured by the diurnal motion of stars
    --1 is a kind of
    cosmic time
    --1 has particulars:
     sidereal day, day; sidereal year; sidereal hour; sidereal month

Definitions from the Web

Sidereal Time

Sidereal time is a measure of time that is based on the motion of the Earth in relation to distant stars.

Senses:

Noun

  1. Apparent time based on the rotation of the Earth with respect to the fixed stars, used as a standard in astronomy.
  2. The time it takes for a specific star to return to the same position in the sky, used in celestial navigation.

Sample Sentences:

1. The astronomer used sidereal time to accurately locate the position of the celestial bodies.

2. Sidereal time differs from mean solar time due to the Earth's axial movement.

3. The sailors relied on sidereal time to plot their course across the vast ocean.

4. Sidereal time is often used in the field of astrophysics to calculate the age of distant galaxies.

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