The Collaborative International Dictionary of English v.0.48:

Perpetuate \Per*pet"u*ate\, v. t. [imp. & p. p. Perpetuated;
   p. pr. & vb. n. Perpetuating.] [L. perpetuatus, p. p. of
   perpetuare to perpetuate. See Perpetual.]
   To make perpetual; to cause to endure, or to be continued,
   indefinitely; to preserve from extinction or oblivion; to
   eternize. --Addison. --Burke.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Perpetuate \Per*pet"u*ate\, a. [L. perpetuatus, p. p.]
   Made perpetual; perpetuated. [R.] --Southey.
   [1913 Webster]

WordNet (r) 3.0 (2006):

perpetuate
    v 1: cause to continue or prevail; "perpetuate a myth"