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laccolith

UK:^*^*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈlækəlɪθ/US:USA pronunciation: respellingUSA pronunciation: respelling(lak′ə lith)

lac•co•lith (lak′ə lith),USA pronunciation n. [Geol.]

Geologya 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•lite (lak′ə līt′).USA pronunciation

Greek lákko(s) pond + -lith
1875–80;

Collins Concise English Dictionary © HarperCollins Publishers::

laccolith /ˈlækəlɪθ/, laccolite /ˈlækəˌlaɪt/ n

a dome-shaped body of igneous rock between two layers of older sedimentary rock: formed by the intrusion of magma, forcing the overlying strata into the shape of a dome
See lopolith

Etymology: 19th Century: from Greek lakkos cistern + -lith

'laccolith' also found in these entries (note: many are not synonyms or translations):

lopolith - lith - neck

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⇱ laccolith - WordReference.com Dictionary of English

laccolith