(X. con; and stella, a star.] The name given to the artificial groups of stars. The figures of men and animals were of old supposed to be outlined in the sky, and mythological names were given to them. The stars in a constellation are distinguished by the Greek letters a, b g, d, etc. ; as a Tauri (Alderbaran), first star in Taurus, or g Orionis (Bellatrix), third star in Orion.