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sidereal

Syllabification: (si·de·re·al)
Pronunciation: /sīˈdi(ə)rēəl/

Definition of sidereal

adjective

  • of or with respect to the distant stars (i.e., the constellations or fixed stars, not the sun or planets).

Origin:

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

sidereal in other Oxford dictionaries

Definition of sidereal in the British & World English dictionary

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