he·​li·​o·​lith·​ic | \ ¦hēlēə¦lithik\

Definition of heliolithic

1 : marked by, observing, or associated with practices (as sun worship and the erection of megaliths) held by some diffusionists to constitute a single widespread neolithic culture originating in Egypt heliolithic culture heliolithic peoples heliolithic monuments
2 : postulating an Egyptian origin for heliolithic traits found as the basis of higher culture in many parts of the world the heliolithic theory

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History and Etymology for heliolithic

heli- entry 1 + -lithic

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of or relating to the heavens

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