hypabyssal
adjective
hyp·abys·sal
ˌhi-pə-ˈbi-səl 
ˌhī-
: of or relating to a fine-grained igneous rock usually formed at a moderate distance below the surface
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“Hypabyssal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hypabyssal. Accessed 23 Dec. 2024.
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