Ritualist

noun

1. An authority on or a student of ritual.
2. One who practices or advocates the observance of ritual.
3. One versed in or devoted to ritual; a specialist in the systematic study of liturgical rites and ceremonies; especially, a writer upon this subject.
4. One who advocates or practises distinctive sacramental and symbolic ritual, especially that inherited or revived from ancient usage; specifically [capitalized], one of that branch of the High-church party in the Anglican Church which has revived the ritual authoritatively in use in the second year of King Edward VI. (see ornaments rubric, under ornament).
5. Ritualistic.