the act of moving along or proceeding in orderly succession or in a formal and ceremonious manner, as a line of people, animals, vehicles, etc.

the line or body of persons or things moving along in such a manner.

Ecclesiastical . an office, litany, etc., said or sung in a religious procession.

Theology . the emanation of the Holy Spirit from the Father and later, in the Western Church, from the Son

distinguished from the generation of the Son and the unbegottenness of the Father.

the act of coming forth from a source.

to go in procession.

noun

advance , autocade , cavalcade , column , consecution , cortege , course , cycle , file , march , motorcade , movement , order , process , run , series , string , succession , trainnotes:a choir entering a church is a procession ; leaving is a recession , chain , progression , round , sequence , suite , train , caravan , cortge , formation , line , litany , parade , retinue