Lewis Short
dēscensĭo (noun F) : descendo (postAug.)
* A going down, descending.
* Prop.: balinearum,into the bath,Plin. 20, 17, 69, § 178: Tiberina,the sail down the Tiber,Cic. Fin. 5, 24, 70: grando in descensione saltus,upon the thickets,Vulg. Isa. 32, 19.—Hence, *
* Meton., the bath itself, Gr. ἐμβάσεις, Plin. Ep. 5, 6, 26.
Charlton T. Lewis, Charles Short, A Latin Dictionary