Source : Webster's Revised Unabridged Dictionary (1913)

Severalize \Sev"er*al*ize\, v. t.
   To distinguish. [Obs.]

Source : WordNet®

severalize
     v 1: distinguish or separate [syn: {severalise}]
     2: mark as different; "We distinguish several kinds of maple"
        [syn: {distinguish}, {separate}, {differentiate}, {secern},
         {secernate}, {severalise}, {tell}, {tell apart}]