The Collaborative International Dictionary of English v.0.48:

Procession \Pro*ces"sion\, v. t. (Law)
   To ascertain, mark, and establish the boundary lines of, as
   lands. [Local, U. S. (North Carolina and Tennessee).] "To
   procession the lands of such persons as desire it."
   --Burrill.
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The Collaborative International Dictionary of English v.0.48:

Procession \Pro*ces"sion\, n. [F., fr. L. processio. See
   Proceed.]
   [1913 Webster]
   1. The act of proceeding, moving on, advancing, or issuing;
      regular, orderly, or ceremonious progress; continuous
      course. --Bp. Pearson.
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            That the procession of their life might be

            More equable, majestic, pure, and free. --Trench.
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   2. That which is moving onward in an orderly, stately, or
      solemn manner; a train of persons advancing in order; a
      ceremonious train; a retinue; as, a procession of
      mourners; the Lord Mayor's procession.
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            Here comes the townsmen on procession. --Shak.
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   3. (Eccl.) An orderly and ceremonial progress of persons,
      either from the sacristy to the choir, or from the choir
      around the church, within or without. --Shipley.
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   4. pl. (Eccl.) An old term for litanies which were said in
      procession and not kneeling. --Shipley.
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   Procession of the Holy Ghost, a theological term applied to
      the relation of the Holy Spirit to the Father and the Son,
      the Eastern Church affirming that the Spirit proceeds from
      the Father only, and the Western Church that the Spirit
      proceeds from the Father and the Son. --Shipley.

   Procession week, a name for Rogation week, when processions
      were made; Cross-week. --Shipley.
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The Collaborative International Dictionary of English v.0.48:

Procession \Pro*ces"sion\, v. i.
   To march in procession. [R.]
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The Collaborative International Dictionary of English v.0.48:

Procession \Pro*ces"sion\, v. i.
   To honor with a procession. [R.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

procession
    n 1: (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" [syn: emanation, rise,
         procession]
    2: the group action of a collection of people or animals or
       vehicles moving ahead in more or less regular formation;
       "processions were forbidden"
    3: the act of moving forward (as toward a goal) [syn:
       progress, progression, procession, advance,
       advancement, forward motion, onward motion] [ant:
       retreat]

Moby Thesaurus II by Grady Ward, 1.0:

49 Moby Thesaurus words for "procession":
   caravan, cavalcade, chain, column, coming after, consecution,
   consecutiveness, continuation, continuity, cortege, course, cycle,
   descent, dress parade, extension, file, flyover, following,
   funeral, line, lineage, logical sequence, march, march past,
   motorcade, mule train, order, order of succession, pack train,
   parade, pomp, posteriority, postposition, progression,
   prolongation, promenade, review, rotation, run, sequence, series,
   skimmington, stream, string, subjunction, succession,
   successiveness, suffixation, train