lac·​co·​lith ˈla-kə-ˌlith How to pronounce laccolith (audio)
: a mass of igneous rock that is intruded between sedimentary beds and produces a domical bulging of the overlying strata
laccolithic 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 examples are programmatically compiled from various online sources to illustrate current usage of the word 'laccolith.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


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

First Known Use

1880, in the meaning defined above

Time Traveler
The first known use of laccolith was in 1880

Dictionary Entries Near laccolith

Cite this Entry

“Laccolith.” Dictionary, Merriam-Webster, Accessed 23 Apr. 2024.

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