The Collaborative International Dictionary of English v.0.48:

Systematize \Sys"tem*a*tize\, v. t. [imp. & p. p.
   Systematized; p. pr. & vb. n. Systematizing.] [Cf. F.
   syst['e]matiser. Cf. Systemize.]
   To reduce to system or regular method; to arrange
   methodically; to methodize; as, to systematize a collection
   of plants or minerals; to systematize one's work; to
   systematize one's ideas.
   [1913 Webster]

         Diseases were healed, and buildings erected, before
         medicine and architecture were systematized into arts.
                                                  --Harris.
   [1913 Webster]

WordNet (r) 3.0 (2006):

systematize
    v 1: arrange according to a system or reduce to a system;
         "systematize our scientific knowledge" [syn: systematize,
         systematise, systemize, systemise]