pro·ces·sion·al 
(prə-sĕshə-nəl)
(prə-sĕshə-nəl)adj.
Of, relating to, or suitable for a procession.
n.
1. A book containing the rituals observed during a religious procession.
2. Music
a. A piece played or sung when the clergy enter a church at the beginning of a service.
b. Music intended to be played or sung during a procession.
pro·cession·al·ly adv.