Ceremonial

Part of speech: noun (n.)

1. A system of rules and ceremonies, enjoined by law, or established by custom, in religious worship, social intercourse, or the courts of princes; outward form. The gorgeous ceremonial of the Burgundian court. Prescott.

2. The order for rites and forms in the Roman Catholic church, or the book containing the rules presribed to be observed on solemn occasions.

Part of speech: adjective (a.)

1. Relating to ceremony, or external rite; ritual; according to the forms of established rites. Ceremonial observances and outward show. Hallam.

2. Observant of forms; ceremonious.