Meaning of amygdaloid

a•myg•da•loid

Pronunciation: (u-mig'du-loid"), [key]
— n. Petrol.
  1. a volcanic rock in which rounded cavities formed by the expansion of gas or steam have later become filled with deposits of various minerals.
—adj.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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