Dictionary

hypabyssal

adjective hyp·abys·sal \ˌhi-pə-ˈbi-səl, ˌhī-\

Definition of HYPABYSSAL

:  of or relating to a fine-grained igneous rock usually formed at a moderate distance below the surface
hyp·abys·sal·ly \-sə-lē\ adverb
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Origin of HYPABYSSAL

International Scientific Vocabulary
First Known Use: 1895

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