un·​der·​thrust ˌən-dər-ˈthrəst How to pronounce underthrust (audio)
underthrust; underthrusting

transitive verb

: to insert (a faulted rock mass) into position under a passive rock mass

Word History

First Known Use

1893, in the meaning defined above

Time Traveler
The first known use of underthrust was in 1893

Dictionary Entries Near underthrust

Cite this Entry

“Underthrust.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/underthrust. Accessed 1 Dec. 2023.

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