Source : Webster's Revised Unabridged Dictionary (1913)

Excision \Ex*ci"sion\, n. [L. excisio: cf. F. excision. See
   {Excide}.]
   1. The act of excising or cutting out or off; extirpation;
      destruction.

            Such conquerors are the instruments of vengeance on
            those nations that have . . . grown ripe for
            excision.                             --Atterbury.

   2. (Eccl.) The act of cutting off from the church;
      excommunication.

   3. (Surg.) The removal, especially of small parts, with a
      cutting instrument. --Dunglison.

Source : WordNet®

excision
     n 1: the omission that is made when an editorial change shortens
          a written passage; "an editor's deletions frequently
          upset young authors"; "both parties agreed on the
          excision of the proposed clause" [syn: {deletion}, {cut}]
     2: surgical removal of a body part or tissue [syn: {ablation},
        {extirpation}, {cutting out}]
     3: the act of banishing a member of the Church from the
        communion of believers and the privileges of the Church;
        cutting a person off from a religious society [syn: {excommunication}]
     4: the act of pulling up or out; uprooting; cutting off from
        existence [syn: {extirpation}, {deracination}]