Lewis Short
(adjective) : quādrāgēsĭmus (old form † quā-drāgensŭmus, Num. ap. Eckh. D. N. 6, p. 296), a, um, quadraginta.
* The fortieth: pars quadragesima,Cato, R. R. 23, 2: nono et quadragesimo die, Varr. ap. Gell. 3, 10, 7: anno fere centesimo et quadragesimo,Cic. Rep. 2, 15, 29; id. Fam. 10, 33, 5: pars quadragesima octava,Col. 5, 1, 9; Plin. 2, 8, 6, § 37.
* Subst.: quā-drāgēsĭma, ae, f. (sc. pars), the fortieth part, a fortieth: quadragesima summae,Suet. Calig. 40.
* In partic.
* As a tax, the fortieth part, a fortieth (as with us, a tenth, a tithe): abolitio quadragesimae quinquagesimaeque,Tac. A. 13, 51: quadragesimae portorium sive vectigal,Symm. Ep. 5, 65: publicum quadragesimae in Asiā egit,Suet. Vesp. 1: C. ATIO ALCIMO FELICIANO ... PROG. QVADRAG. GALLIARVM, Inscr. Maff. Mus. Veron.; cf. abbrev., TABVLARIVS XXXX. GALLIAR.,Inscr. Orell. 3344.
* In eccl. Lat., the Christian fast of forty days, Lent, Hier. Ep. 41, 3.
Charlton T. Lewis, Charles Short, A Latin Dictionary