Main Entry: bath·o·lith

Pronunciation: \ˈba-thə-ˌlith\

Function: noun

Etymology: Greek bathos depth + International Scientific Vocabulary -lith

Date: circa 1900

: a great mass of intruded igneous rock that for the most part stopped in its rise a considerable distance below the surface

— bath·o·lith·ic \ˌba-thə-ˈli-thik\ adjective