Sirius
Syllabification: (Sir·i·us)
Pronunciation: /ˈsi(ə)rēəs/
Astronomy
Definition of Sirius
- 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', because it rose with the sun in the heat of summer. See dog days