Pronunciation: (lak'u-lith), [key]
a mass of igneous rock formed from magma that did not find its way to the surface but spread laterally into a lenticular body, forcing overlying strata to bulge upward. Also,lac•co•litePronunciation: (lak'u-līt"). [key]
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.