The Collaborative International Dictionary of English v.0.48:

Redact \Re*dact"\ (r?*d?kt"), v. t. [L. redactus, p. p. of
   redigere; pref. red-, re-, again, back + agere to put in
   motion, to drive.]
   To reduce to form, as literary matter; to digest and put in
   shape (matter for publication); to edit.
   [1913 Webster]

WordNet (r) 3.0 (2006):

redact
    n 1: someone who puts text into appropriate form for publication
         [syn: redact, redactor, reviser, rewriter, rewrite
         man]
    v 1: formulate in a particular style or language; "I wouldn't
         put it that way"; "She cast her request in very polite
         language" [syn: frame, redact, cast, put, couch]
    2: 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]