sub·​crust·​al ˌsəb-ˈkrə-stᵊl How to pronounce subcrustal (audio)
: situated or occurring below a crust and especially the crust of the earth

Word History

First Known Use

1884, in the meaning defined above

Time Traveler
The first known use of subcrustal was in 1884

Dictionary Entries Near subcrustal

Cite this Entry

“Subcrustal.” Dictionary, Merriam-Webster, Accessed 23 Feb. 2024.

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