hypabyssal

[ hip-uh-bis-uhl, hahy-puh- ]

adjective

, Geology.

1. (of an igneous rock) intermediate in texture between coarse-grained intrusive rocks and fine-grained extrusive rocks.
2. noting any of various minor intrusions, as dikes and sills, that have crystallized under conditions intermediate between plutonic and extrusive.

hypabyssal

/ ˌhɪpəˈbɪsəl /

adjective

1. (of igneous rocks) derived from magma that has solidified at shallow depth in the form of dykes, sills, etc

Word History and Origins

Origin of hypabyssal¹

First recorded in 1890–95; hyp- + abyssal

Word History and Origins

Origin of hypabyssal¹

C19: from hyp- + -abyssal