hypabyssal


hyp·a·bys·sal

H0354900 (hĭp′ə-bĭs′əl, hī′pə-)adj. Geology Solidifying chiefly as a minor intrusion, especially as a dike or sill, before reaching the earth's surface. Used of rocks.
hyp′a·bys′sal·ly adv.

hypabyssal

(ˌhɪpəˈbɪsəl) adj (Geological Science) (of igneous rocks) derived from magma that has solidified at shallow depth in the form of dykes, sills, etc[C19: from hyp- + -abyssal]

hyp•a•byss•al

(ˌhɪp əˈbɪs əl, ˌhaɪ pə-)

adj. of or pertaining to any of various minor intrusions of igneous rock, as dikes and sills, that have crystallized at a moderate depth below the surface. [1890–95]

hypabyssal

Describes rock that has solidified as an intrusion before reaching the Earth’s surface.