[1] : The Collaborative International Dictionary of English v.0.48

deletion \dele"tion\, n. l. deletio, fr. delere. see
   delete.
   act of deleting, blotting out, or erasing; destruction.
   obs. --jer. taylor.
   1913 webster

         a total deletion of every person of the opposing party.
                                                  --sir m. hale.
   1913 webster
see also:
delete 

[2] : WordNet (r) 2.0

deletion
     n 1: any process whereby sounds are left out of spoken words or
          phrases syn: omission
     2: 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: excision, cut
     3: the act of deleting something written or printed
see also:
omission excision cut 

[3] : Moby Thesaurus II by Grady Ward, 1.0

22 moby thesaurus words for "deletion":
   abbreviation, abridgment, blot, blotting, blotting out,
   blue-penciling, bowdlerization, cancel, cancellation, censoring,
   censorship, editing, effacement, erasure, expunction, expurgation,
   obliteration, omission, scrubbing, striking, washing out,
   wiping out

Deletion >> D Words
Deletion, definition of term: Deletion
deletion_pag1.html