The Collaborative International Dictionary of English v.0.48:

Eternize \E*ter"nize\, v. t. [imp. & p. p. Eternized; p. pr. &
   vb. n. Eterniziing.] [Cf. F. ['e]terniser.]
   1. To make eternal or endless.
      [1913 Webster]

            This other [gift] served but to eternize woe.
                                                  --Milton.
      [1913 Webster]

   2. To make forever famous; to immortalize; as, to eternize
      one's self, a name, exploits.
      [1913 Webster]

            St. Alban's battle won by famous York,
            Shall be eternized in all age to come. --Shak.
      [1913 Webster]

WordNet (r) 3.0 (2006):

eternize
    v 1: cause to continue indefinitely
    2: make famous forever; "This melody immortalized its composer"
       [syn: immortalize, immortalise, eternize, eternise,
       eternalize, eternalise]