WordReference Random House Unabridged Dictionary of American English © 2025
cus•tu•mal
(kus′chŏŏ məl),USA pronunciation n.
- a customary.
- Medieval Latin custumālis, a Latinization of Old French costumel customary, usual, equivalent. to costume custom + -el -al1
- 1375–1425; 1560–70 for current sense; late Middle English (as adjective, adjectival)