hyp·​abys·​sal ˌhi-pə-ˈbi-səl How to pronounce hypabyssal (audio)
: of or relating to a fine-grained igneous rock usually formed at a moderate distance below the surface
hypabyssally adverb

Word History


International Scientific Vocabulary

First Known Use

1895, in the meaning defined above

Time Traveler
The first known use of hypabyssal was in 1895

Dictionary Entries Near hypabyssal

Cite this Entry

“Hypabyssal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hypabyssal. Accessed 26 Feb. 2024.

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