The Collaborative International Dictionary of English v.0.48:

Ophiolatry \O`phi*ol"a*try\ ([=o]`f[i^]*[o^]l"[.a]*tr[y^]), n.
   [Gr. 'o`fis serpent + latrei`a worship.]
   The worship of serpents.
   [1913 Webster] Ophiologic

WordNet (r) 3.0 (2006):

ophiolatry
    n 1: the worship of snakes [syn: ophiolatry, serpent-
         worship]