Pronunciation: (u-mig'du-loid"), [key]
a volcanic rock in which rounded cavities formed by the expansion of gas or steam have later become filled with deposits of various minerals.
1. (of rocks) containing amygdules.
3. Anat.of or pertaining to an amygdala.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.