Pronunciation: (ser"u-mō'nē-ul),[key] —adj. 1. of, pertaining to, or characterized by ceremony; formal; ritual: a ceremonial occasion. 2. used in or in connection with ceremonies: ceremonial robes.
—n. 1. a system of ceremonies, rites, or formalities prescribed for or observed on any particular occasion; a rite.
2. Rom. Cath. Ch. a. the order for rites and ceremonies.
b. a book containing it.
3. formal behavior found at, or appropriate to, a certain occasion: the ceremonial of a state banquet.