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Definition of: laccolith
(lak′ə·lith) noun Geol.
A mass of intrusive lava spreading out between strata and lifting the overlying rocks into domes. Also lac′co·lite (-līt). [<Gk. lakkos a reservoir + -LITH1]
—lac′co·lith′ic, lac′co·lit′ic (-lit′ik) adjective
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