laccolith

noun

lac·co·lith ˈla-kə-ˌlith

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

laccolithic

ˌla-kə-ˈli-thik

adjective

Example Sentences

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.

Word History

Etymology

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

See more words from the same year

Cite this Entry

Style

“Laccolith.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/laccolith. Accessed 7 Dec. 2022.

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