amygdaloid

[ uh-mig-duh-loid ]
/ əˈmɪg dəˌlɔɪd /

noun Petrology.

a volcanic rock in which rounded cavities formed by the expansion of gas or steam have later become filled with deposits of various minerals.

adjective Also a·myg·da·loi·dal.

(of rocks) containing amygdules.
Anatomy. of or relating to an amygdala.

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Origin of amygdaloid

1785–95; < Latin amygdal(a) almond + -oid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for amygdaloidal

British Dictionary definitions for amygdaloidal (1 of 2)

amygdaloidal
/ (əˌmɪɡdəˈlɔɪdəl) /

adjective

(of a volcanic rock) containing amygdales
a less common form of amygdaloid (def. 2)

British Dictionary definitions for amygdaloidal (2 of 2)

amygdaloid
/ (əˈmɪɡdəˌlɔɪd) /

noun

a volcanic igneous rock containing amygdales

adjective

having the shape of an almond
a less common form of amygdaloidal (def. 1)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for amygdaloidal

amygdaloid
[ ə-mĭgdə-loid′ ]

adj.

Shaped like an almond.
Of or relating to an amygdala.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.