ˈlakəˌlith noun
also lac·co·lite -līt
( -s )
Etymology: Greek lakkos cistern, pit + English -lith or -lite
: a mass of igneous rock intruded between sedimentary beds and producing a domic bulging of the overlying strata
• lac·co·lith·ic | ̷ ̷ ̷ ̷|lithik also lac·co·lit·ic -id.ik adjective