LATIN DICTIONARYLexicon Latīnum
proper noun · masculinethird declension

Procyōn

Procyōn m sg (genitive Procyōnis)

Meaning

  1. Canis Minor

Declension

declension
formsingularplural
nominativeProcyōn—
genitiveProcyōnis—
dativeProcyōnī—
accusativeProcyōnem—
ablativeProcyōne—
vocativeProcyōn—

Prŏcўon, ōnis, m., = Προκύων (Foredog),
I. a constellation that rises before the dog-star (pure Lat. Antecanis), Cic. Arat. 222; Hor. C. 3, 29, 18; Cic. N. D. 2, 44, 144; Col. 11, 2, 52; Manil. 5, 197.

Origins

From Ancient Greek Προκύων (Prokúōn), from πρό (pró, “before”) + κύων (kúōn, “dog”), in reference to it preceding the "Dog Star" Sirius.

Quick answers

What does Procyōn mean in Latin?
Procyōn, a proper noun, means “Canis Minor”.
What is the genitive of Procyōn?
The genitive singular is Procyōnis. Procyōn is masculine, third declension.