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sidereal
sidereal definition
si·dereal (sī dir′ē əl)
adjective
- of or pertaining to the stars
- expressed in reference to the stars
Etymology: < L sidereus < sidus (gen. sideris), a star < IE base *sweid-, to gleam > Lith svidù, to gleam
Related Forms:
- sidereally si·de′real·ly adverb
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