pro·ces·sion 
(prə-sĕshən)
(prə-sĕshən)n.
1.
a. A group of persons, vehicles, or objects moving along in an orderly, formal manner.
b. The movement of such a group.
2. Theology Origination; emanation: the procession of the Holy Spirit.
intr.v. pro·ces·sioned, pro·ces·sion·ing, pro·ces·sions
To form or go in a procession.
[Middle English, from Old French, from Late Latin prōcessiō, prōcessiōn-, from Latin, an advance, from prōcessus, past participle of prōcēdere, to advance; see PROCEED.]