lac·​co·​lith | \ ˈla-kə-ˌlith How to pronounce laccolith (audio) \

Definition of laccolith

: a mass of igneous rock that is intruded between sedimentary beds and produces a domical bulging of the overlying strata

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Other Words from laccolith

laccolithic \ ˌla-​kə-​ˈli-​thik How to pronounce laccolith (audio) \ adjective

Examples of laccolith in a Sentence

Recent Examples on the Web This is the language of Big Sky Country: laccolith, dike, shonkinite, marine shale. Porter Fox, Outside Online, 1 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'laccolith.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of laccolith

1880, in the meaning defined above

History and Etymology for laccolith

Greek lakkos pond, reservoir + English -lith — more at lake

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Time Traveler for laccolith

Time Traveler

The first known use of laccolith was in 1880

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Cite this Entry

“Laccolith.” Dictionary, Merriam-Webster, Accessed 15 Jun. 2021.

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