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sidereal

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(sī dir′ē əl)

adjective

of or pertaining to the stars
expressed in reference to the stars

Origin: < L sidereus < sidus (gen. sideris), a star < IE base *sweid-, to gleam > Lith svidù, to gleam

Related Forms:

sidereally adverb

See sidereal in American Heritage Dictionary 4

adjective

Of, relating to, or concerned with the stars or constellations; stellar.
Measured or determined by means of the apparent daily motion of the stars: sidereal time.

Origin:

Origin: From Latin sīdereus

Origin: , from sīdus, sīder-, constellation, star

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