Procyon (n.) Look up Procyon at Dictionary.com
bright star in constellation Canis Minoris, 1650s, from Latin, from Greek prokyon, from pro "before" (see pro-) + kyon "dog" (from PIE root *kwon- "dog"); so called from its rising just before the "Dog Star," Sirius. By Roman astronomers, sometimes Latinized as Antecanis.