I. prə-ˈsesh-nəl, -ˈse-shə-n ə l noun
Date: 15th century
1. : a book containing material for a procession
2. : a musical composition (as a hymn) designed for a procession
3. : a ceremonial procession
II. adjective
Date: circa 1611
: of, relating to, or moving in a procession
• pro·ces·sion·al·ly adverb