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Sidereal day

noun

Definitions

Noun
  1. 1
    One day of sidereal time; the time in which Earth rotates once around its axis, relative to the point of the vernal equinox (about 23 hours, 56 minutes, 4 seconds).
  2. 2
    the time for one complete rotation of the earth relative to a particular star, about 4 minutes shorter than a mean solar day wordnet
  3. 3
    The rotational period of Earth; the time in which Earth rotates around its axis 360 degrees.

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