Ritual

Webster's Dictionary of the English Language

·noun A book containing the rites to be observed.

II. Ritual ·adj Of or pertaining to rites or ritual; as, ritual service or sacrifices; the ritual law.

III. Ritual ·noun Hence, the code of ceremonies observed by an organization; as, the ritual of the freemasons.

IV. Ritual ·noun A prescribed form of performing divine service in a particular church or communion; as, the Jewish ritual.