plutonic(redirected from plutonicly)
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(of igneous rocks) derived from magma that has cooled and solidified below the surface of the earth
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
Pertaining to rocks formed at a great depth. Also known as abyssal; deep-seated; plutonian.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.