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View synonyms for sidereal
sidereal
[ sahy-deer-ee-uhl ]
adjective
, Astronomy.
- determined by or from the stars:
sidereal time.
- of or relating to the stars.
sidereal
/ saɪˈdɪərɪəl /
adjective
- of, relating to, or involving the stars
- determined with reference to one or more stars
the sidereal day
sidereal
/ sī-dîr′ē-əl /
- Relating to the stars or constellations.
- 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·dere·al·ly adverb
- nonsi·dere·al adjective
- unsi·dere·al adjective
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Word History and Origins
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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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Example Sentences
Let us put aside for a moment planetary and sidereal visions, which appear more subjective than objective.
From Project Gutenberg
The planetary and sidereal systems which constitute the universe are at different degrees of organization and advancement.
From Project Gutenberg
Antares is much further down in the sky, in relation to the arbitrary sidereal axis, and it's a deeper red.
From Project Gutenberg
If the clock gains or loses with respect to sidereal time, take this into account in the value of U.
From Project Gutenberg
When the hour circle passing through Sirius coincides with the meridian, the sidereal time is 6h.
From Project Gutenberg
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