laccolith Syllabification: (lac·co·lith)Pronunciation: /ˈlakəˌliTH/Definition of laccolith noun Geology a mass of igneous rock, typically lens-shaped, that has been intruded between rock strata causing uplift in the shape of a dome. Origin: late 19th century: from Greek lakkos 'reservoir' + -lithlaccolith in other Oxford dictionaries Definition of laccolith in the British & World English dictionary
