Source : Webster's Revised Unabridged Dictionary (1913)

Socialize \So"cial*ize\, v. t.
   1. To render social.

   2. To subject to, or regulate by, socialism.

Source : WordNet®

socialize
     v 1: take part in social activities; interact with others; "He
          never socializes with his colleagues"; "The old man
          hates to socialize" [syn: {socialise}]
     2: train for a social environment; "The children must be
        properly socialized" [syn: {socialise}]
     3: prepare for social life; "Children have to be socialized in
        school" [syn: {socialise}]
     4: make conform to socialist ideas and philosophies; "Health
        care should be socialized!" [syn: {socialise}]