Source : Webster's Revised Unabridged Dictionary (1913)

Individualize \In`di*vid"u*al*ize\, v. t. [imp. & p. p.
   {Individualized}; p. pr. & vb. n. {Individualizing}.] [Cf. F.
   individualiser.]
   The mark as an individual, or to distinguish from others by
   peculiar properties; to invest with individuality.

         The peculiarities which individualize and distinguish
         the humor of Addison.                    --N. Drake.

Source : WordNet®

individualize
     v 1: make or mark aor treat as individual; "The sounds were
          individualized by sharpness and tone" [syn: {individualise}]
     2: make personal or more personal; "personalized service" [syn:
         {personalize}, {personalise}, {individualise}] [ant: {depersonalize},
         {depersonalize}]