Webster's Revised Unabridged Dictionary · 1913

Ceremonial

Ceremonial , adjective

[Latin caerimonialis: compare French cérimonial. See Ceremony.]

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

[In this sense ceremonious is now preferred.]

2.
Observant of forms; ceremonious. [In this sense ceremonious is now preferred.] — Donne
He moves in the dull ceremonial track. — Druden

Ceremonial , noun

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 prescribed to be observed on solemn occasions.