The Collaborative International Dictionary of English v.0.48:
Heliolatry \He`li*ol"a*try\, n. [Helio- + Gr. ? service, worship.] Sun worship. See Sabianism. [1913 Webster]WordNet (r) 3.0 (2006):
heliolatry n 1: the worship of the sun [syn: heliolatry, sun-worship]