The Collaborative International Dictionary of English v.0.48:

Edit \Ed"it\ ([e^]d"[i^]t), v. t. [imp. & p. p. Edited; p. pr.
   & vb. n. Editing.] [F. ['e]diter, or L. editus, p. p. of
   edere to give out, put forth, publish; e out + dare to give.
   See Date a point of time.]
   To superintend the publication of; to revise and prepare for
   publication; to select, correct, arrange, etc., the matter
   of, for publication; as, to edit a newspaper.
   [1913 Webster]

         Philosophical treatises which have never been edited.
                                                  --Enfield.
   [1913 Webster]

WordNet (r) 3.0 (2006):

edit
    v 1: prepare for publication or presentation by correcting,
         revising, or adapting; "Edit a book on lexical semantics";
         "she edited the letters of the politician so as to omit the
         most personal passages" [syn: edit, redact]
    2: supervise the publication of; "The same family has been
       editing the influential newspaper for almost 100 years"
    3: cut and assemble the components of; "edit film"; "cut
       recording tape" [syn: edit, cut, edit out]
    4: cut or eliminate; "she edited the juiciest scenes" [syn:
       edit, blue-pencil, delete]

Moby Thesaurus II by Grady Ward, 1.0:

92 Moby Thesaurus words for "edit":
   abbreviate, abridge, adapt, alter, amend, annotate, arrange,
   assemble, blip, blot out, blue-pencil, bowdlerize, cancel, censor,
   change, clean up, comment upon, commentate, compile, compress,
   condense, copy, copy out, correct, crop, cross out, cut, cut out,
   delete, draft, draw up, edit out, emend, emendate, enface, engross,
   erase, expunge, expurgate, gloss, inscribe, kill, make a recension,
   make an edition, make out, modify, omit, order, organize, pen,
   pencil, polish, prepare, push the pen, put in writing, recense,
   record, rectify, redact, redraft, reduce, remark upon, reorder,
   reorganize, rephrase, rescind, revamp, revise, rework, rewrite,
   rub out, scribe, scrive, scroll, select, shorten, spill ink,
   spoil paper, strike, strike off, strike out, style, superscribe,
   touch up, trace, transcribe, type, void, work over, write,
   write down, write out



The Free On-line Dictionary of Computing (30 December 2018):

edit

    Use of some kind of editor program to modify a
   document.  Also used to refer to the modification itself,
   e.g. "my last edit only made things worse".

   To edit something usually implies that the changes will
   persist for some time, usually by saving the edited document
   to a file, though one might open an editor, create a new
   document in memory, print it and exit without saving it to
   disk.

   Editing is normally done by a human but see, e.g., sed.

   (2007-07-11)