The Collaborative International Dictionary of English v.0.48:

collectivized \col*lec"tiv*ized\ a.
   brought under collective ownership and operating under
   collectivist principles; -- used especially of organizations
   operating under the ownership by the state.

   Note: [Narrower terms: socialistic (vs. capitalistic),
         socialist; communistic]

   Syn: collective, collectivised, state-controlled.
        [WordNet 1.5 +PJC]

The Collaborative International Dictionary of English v.0.48:

Collectivist \Col*lect"iv*ist\, collectivistic
\col*lec`tiv*is"tic\a.
   1. Relating to, characteristic of, or advocating,
      collectivism.
      [1913 Webster]

   2. operating under collectivist principles.

   Note: [Narrower terms: socialistic (vs. capitalistic),
         socialist; communistic]

   Syn: collectivized, state-controlled.
        [WordNet 1.5]