The Collaborative International Dictionary of English v.0.48:

Revision \Re*vi"sion\, n. [F. r['e]vision, L. revisio.]
   1. The act of revising; reexamination for correction; review;
      as, the revision of a book or writing, or of a proof
      sheet; a revision of statutes.
      [1913 Webster]

   2. That which is made by revising.
      [1913 Webster]

   Syn: Reexamination; revisal; revise; review.
        [1913 Webster] Revisional

WordNet (r) 3.0 (2006):

revision
    n 1: the act of revising or altering (involving reconsideration
         and modification); "it would require a drastic revision of
         his opinion" [syn: revision, alteration]
    2: the act of rewriting something [syn: revision, revisal,
       revise, rescript]
    3: something that has been written again; "the rewrite was much
       better" [syn: rewrite, revision, rescript]

The Free On-line Dictionary of Computing (19 January 2023):

revision

    A release of a piece of software which is not
   a major release or a bugfix, but only introduces small
   changes or new features.

   (1996-08-04)