procession in WordNet English dictionary

1. the act of moving forward (as toward a goal)
   progress  progression  procession  advance  advancement  forward motion  onward motion 
   
2. (theology) the origination of the Holy Spirit at Pentecost
   "the emanation of the Holy Spirit"; "the rising of the Holy Ghost"; "the doctrine of the procession of the Holy Spirit from the Father and the Son"
   emanation  rise  procession 
   
3. the group action of a collection of people or animals or vehicles moving ahead in more or less regular formation
   "processions were forbidden"
   procession