The Collaborative International Dictionary of English v.0.48:
Hagiolatry \Ha`gi*ol"a*try\ (-[o^]l"[.a]*tr[y^]), n. [Gr. "a`gios sacred + ? worship.] The invocation or worship of saints. [1913 Webster]WordNet (r) 3.0 (2006):
hagiolatry n 1: the worship of saints [syn: hagiolatry, hierolatry]