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View synonyms for sidereal

sidereal

[ sahy-deer-ee-uhl ]

adjective

, Astronomy.
  1. determined by or from the stars:

    sidereal time.

  2. of or relating to the stars.


sidereal

/ saɪˈdɪərɪəl /

adjective

  1. of, relating to, or involving the stars
  2. determined with reference to one or more stars

    the sidereal day



sidereal

/ sī-dîrē-əl /

  1. Relating to the stars or constellations.
  2. Measured with respect to the background of fixed stars instead of the Sun.


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Derived Forms

  • siˈdereally, adverb

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Other Words From

  • si·dere·al·ly adverb
  • nonsi·dere·al adjective
  • unsi·dere·al adjective

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Word History and Origins

Origin of sidereal1

1625–35; < Latin sīdere ( us ) of, belonging to the stars ( sīder-, stem of sīdus star, constellation + -eus adj. suffix) + -al 1

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Word History and Origins

Origin of sidereal1

C17: from Latin sīdereus, from sīdus a star, a constellation

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Compare Meanings

How does sidereal compare to similar and commonly confused words? Explore the most common comparisons:

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Example Sentences

Let us put aside for a moment planetary and sidereal visions, which appear more subjective than objective.

The planetary and sidereal systems which constitute the universe are at different degrees of organization and advancement.

Antares is much further down in the sky, in relation to the arbitrary sidereal axis, and it's a deeper red.

If the clock gains or loses with respect to sidereal time, take this into account in the value of U.

When the hour circle passing through Sirius coincides with the meridian, the sidereal time is 6h.

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