amygdaloid

[ uh-mig-duh-loid ]

nounPetrology.
  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.

adjectiveAlso a·myg·da·loi·dal.
  1. (of rocks) containing amygdules.

  1. Anatomy. of or relating to an amygdala.

Origin of amygdaloid

1
1785–95; <Latin amygdal(a) almond + -oid

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

British Dictionary definitions for amygdaloid

amygdaloid

/ (əˈmɪɡdəˌlɔɪd) /


noun
  1. a volcanic igneous rock containing amygdales

adjective
  1. having the shape of an almond

  2. 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