WordReference Random House Unabridged Dictionary of American English © 2026
he•li•ol•a•try
(hē′lē ol′ə trē),USA pronunciation n.
he′li•ol′a•ter, n.
he′li•ol′a•trous, adj.
- worship of the sun.
- helio- + -latry 1820–30
he′li•ol′a•trous, adj.