sidereal
English
[edit]Alternative forms
[edit]Etymology
[edit]From Latin sīdereus + -al (cf. Latin sīderālis), from sīdus (“star, constellation”), of unknown ultimate origin, likely a substrate language such as Pre-Greek.
Pronunciation
[edit]- (UK) IPA(key): /saɪˈdɪə.ɹi.əl/
- (US) IPA(key): /saɪˈdɪɚ.i.əl/, /sɪˈdɪɚ.i.əl/
orAudio (US): (file) Audio (US): (file)
Adjective
[edit]
sidereal (not comparable)
- Of or relating to the stars.
- 1919, Hector Macpherson, “Chapter V”, in S.Chapman (series editor), editor, Men of Science: Herschel:
- The field of sidereal astronomy, therefore, was virtually untrodden when, shortly after the beginning of his telescopic work, Herschel began his first review of the heavens.
- (astronomy) Relating to a measurement of time relative to the position of the stars.
- 1903, Percival Lowell, “Chapter I”, in The Solar System:
- Then, from a sufficient number of observations of synodic periods to give their mean, we obtain the sidereal period, or period with reference to the stars.
- (astronomy) Relating to a measurement of time relative to the point of the vernal equinox.
Derived terms
[edit]Related terms
[edit]Translations
[edit]of or relating to the stars
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relating to a measurement of time relative to the position of the stars
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Anagrams
[edit]Categories:
- English terms derived from Latin
- English terms suffixed with -al
- English terms with unknown etymologies
- English terms derived from substrate languages
- English terms derived from a Pre-Greek substrate
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- en:Astronomy
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