Hypabyssal definition

hĭpə-bĭsəl, hīpə-
Solidifying chiefly as a minor intrusion, especially as a dike or sill, before reaching the earth's surface. Used of rocks.
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(geol.) Designating or of igneous rocks solidified at moderate depths, generally as sills or dikes.
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(geology, of rock) That solidifies, as a minor intrusion, before reaching the Earth's surface.
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