Definition of Sirius in English:

Sirius

proper noun

Astronomy
  • The brightest star in the sky, south of the celestial equator in the constellation Canis Major. It is a binary star with a dim companion, which is a white dwarf.

    Also called Dog Star

Origin

Latin, from Greek seirios astēr scorching star.

Pronunciation:

Sirius

/ˈsɪrɪəs/