Consuetudinary
Consuetudinary (Med. Lat.
consuetudinarius, from
consuetudo, custom), customary, a term used especially of
law based on custom as opposed to
statutory or written law. (
See also: Oral law,
Custom)
As a noun consuetudinary (Lat. consuetudinarius) is the name given to a ritual book containing the forms and ceremonies used in. the services of a particular monastery, cathedral or religious order.