wall rock

noun

: a rock through which a fault or vein runs

Word History

First Known Use

1866, in the meaning defined above

Time Traveler

The first known use of wall rock was in 1866

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wall reaction

wall rock

wall rocket

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Cite this Entry

Style

“Wall rock.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/wall%20rock. Accessed 1 Dec. 2025.

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