processional noun 3adjective 1forms 1 noun3 •A hymn or other music used during a procession; prosodion. •A group of people or things moving along in an orderly, stately, or solemn manner.At the Wusdatts’ once, the two had marched in the processional to the buffet table with their small fingers linked […] — 1973 •A service book relating to ecclesiastical processions. adjective1 •Of, pertaining to, or used during a procession, particularly at the start of a religious ceremony or wedding.The oxen took up again their quiet processional gait and the old man walked ahead of them, his eyes on the ground. — 1921 formsprocessionals