Lewis Short
commissĭo (noun F) : committo.
* (Acc. to committo, I. B.) Lit., a setting or bringing together in contest; hence, the beginning of a contest (in the public games, etc.): tecum ago, ut jam ab ipsā commissione ad me... persequare, etc.,Cic. Att. 15, 26, 1; 16, 5, 1: ludorum,Suet. Aug. 43; id. Galb. 6; Plin. Ep. 7, 24, 6; id. Pan. 54, 1; Macr. S. 2, 7.
* Meton., a speech at the opening of the games; hence, a prize declamation, ostentatious speech, ἀγώνισμα, Calig. ap. Suet. Calig. 53; Suet. Aug. 89; v. Casaub. in h. ll.
* (Acc. to committo, II. B. 4.) A perpetration, commission: piaculi,Arn. 4, p. 148.
Charlton T. Lewis, Charles Short, A Latin Dictionary