(1):

(n.) Hence, the code of ceremonies observed by an organization; as, the ritual of the freemasons.

(2):

(a.) Of or pertaining to rites or ritual; as, ritual service or sacrifices; the ritual law.

(3):

(n.) A prescribed form of performing divine service in a particular church or communion; as, the Jewish ritual.

(4):

(n.) A book containing the rites to be observed.