The Collaborative International Dictionary of English v.0.48:
Immortalize \Im*mor"tal*ize\, v. t. [imp. & p. p. Immortalized; p. pr. & vb. n. Immortalizing.] [Cf. F. immortaliser.] 1. To render immortal; to cause to live or exist forever. --S. Clarke. [1913 Webster] 2. To exempt from oblivion; to perpetuate in fame. [1913 Webster] Alexander had no Homer to immortalize his guilty name. --T. Dawes. [1913 Webster]