noun lac·co·lith \ˈla-kə-ˌlith\

Definition of laccolith

  1. :  a mass of igneous rock that is intruded between sedimentary beds and produces a domical bulging of the overlying strata


play \ˌla-kə-ˈli-thik\ adjective

Origin and Etymology of laccolith

Greek lakkos pond, reservoir + English -lith — more at lake

First Known Use: 1879

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