Source : Webster's Revised Unabridged Dictionary (1913)

Classify \Clas"si*fy\, v. t. [imp. & pp. {Classified}; p. pr. &
   vb. n. {Classifying}.] [L. classis class + ?]
   To distribute into classes; to arrange according to a system;
   to arrange in sets according to some method founded on common
   properties or characters.

   Syn: To arrange; distibute; rank.