Real Dictionary

ritual
Ritual activities happen as part of a ritual or tradition.
variable noun: A ritual is a religious service or other ceremony which involves a series of actions performed in a fixed order.

ritual in American English
of, having the nature of, or done as a rite or rites
adjective: of the nature of or practiced as a rite or ritual
noun: an established or prescribed procedure for a religious or other rite

ritual in British English
adjective: of, relating to, or characteristic of religious, social, or other rituals
noun: the prescribed or established form of a religious or other ceremony