Source : Webster's Revised Unabridged Dictionary (1913)

Refrigerate \Re*frig"er*ate\ (-[=a]t), v. t. [imp. & p. p.
   {Refrigerated} (-[=a]`t[e^]d); p. pr. & vb. n.
   {Refrigerating}.] [L. refrigeratus, p. p. of refrigerare;
   pref. re- re- + frigerare to make cool, fr. frigus, frigoris,
   coolness. See {Frigid}.]
   To cause to become cool; to make or keep cold or cool.

Source : WordNet®

refrigerated
     adj : made or kept cold by refrigeration; "keep the milk
           refrigerated"; "a refrigerated truck"