I.a going away, departure (opp. accessus—good prose).
I. In gen.: “post Dionysii decessum,” Nep. Tim. 2, 3.—
II. Esp.
A. The withdrawal, retirement of a magistrate from the province he has governed (in Cic. oftener decessio): “post M. Bruti decessum,” Cic. Phil. 2, 38; so Cael. ap. Cic. Fam. 8, 10 fin.—
B. Pregn., decrease, disappearance, departure: “aestūs,” the ebbing, subsidence, Caes. B. G. 3, 13; “Nili,” Plin. 18, 18, 47, § 168: “febris,” Cels. 3, 12: “morbi,” Gell. 4, 2, 13.—