laccolith

noun

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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
This is the language of Big Sky Country: laccolith, dike, shonkinite, marine shale. Porter Fox, Outside Online, 1 June 2018

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

Dictionary Entries Near laccolith

Cite this Entry

“Laccolith.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/laccolith. Accessed 23 Nov. 2024.

More from Merriam-Webster on laccolith

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!