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sidereal Line breaks: si|der¦eal
Pronunciation: /sʌɪˈdɪərɪəl/

Definition of sidereal in English:


Of or with respect to the distant stars (i.e. the constellations or fixed stars, not the sun or planets).
Example sentences
  • Fixed stars continued to be used as reference points throughout the Middle Ages, and even Copernicus measured positions in a sidereal zodiac beginning from the fixed star Mesartim.
  • Slightly brighter today is Alpherg, which is taken as the starting point for the sidereal zodiac.
  • In the first sphere across the zodiac we see twelve sidereal animals.


Mid 17th century: from Latin sidereus (from sidus, sider- 'star') + -al.

Words that rhyme with sidereal

arterial, bacterial, cereal, criterial, ethereal, ferial, funereal, immaterial, imperial, magisterial, managerial, material, ministerial, presbyterial, serial, venereal, biomaterial
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