noun Sir·i·us \ˈsir-ē-əs\

Definition of SIRIUS

:  a star of the constellation Canis Major that is the brightest star in the heavens —called also Dog Star

Origin of SIRIUS

Middle English, from Latin, from Greek Seirios
First Known Use: 14th century

Other Astronomy Terms

gibbous, nadir, nebulous, penumbra, retrograde, sidereal, syzygy, wane, wax, zenith

Rhymes with SIRIUS


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