n.
Pronunciation: ' la-k ə - ˌ lith
Function: noun
Etymology: Greek lakkos pond, reservoir + English -lith ― more at LAKE
Date: 1879
: a mass of igneous rock that is intruded between sedimentary beds and produces a domical bulging of the overlying strata
– lac · co · lith · ic \ ˌ la-k ə - ' li-thik \ adjective