The Collaborative International Dictionary
Quadragesimal
Quadragesimal \Quad`ra*ges"i*mal\, a. [Cf. F. quadrag['e]simal.] Belonging to Lent; used in Lent; Lenten.
Wiktionary
quadragesimal
a. 1 That lasts forty days 2 Belonging to Lent; used in Lent; Lenten