The Collaborative International Dictionary of English v.0.48:

Replicate \Rep"li*cate\ (l?-k?t), Replicated \Rep"li*ca`ted\
   (-k?`t?d), a. [L. replicatus, p. p. of replicare. See
   Reply.]
   Folded over or backward; folded back upon itself; as, a
   replicate leaf or petal; a replicate margin of a shell.
   [1913 Webster]