amygdaloid
a volcanic rock in which rounded cavities formed by the expansion of gas or steam have later become filled with deposits of various minerals.
(of rocks) containing amygdules.
Anatomy. of or relating to an amygdala.
Origin of amygdaloid
1Words Nearby amygdaloid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use amygdaloid in a sentence
Chalcedony, apparently from amygdaloid of the trap formation, was also found at Port Warrender.
Quartz crystals, with chalcedony, from nodules in amygdaloid.
Purplish-brown epidote, with small nests or concretions of green epidote and quartz; forming a sort of amygdaloid.
Masses of the two former minerals were also found imbedded in amygdaloid and trap-rock, thus denoting the parent beds of rock.
Summary Narrative of an Exploratory Expedition to the Sources of the Mississippi River, in 1820 | Henry Rowe SchoolcraftIt is found in connection with isolated blocks of amygdaloid, of primitive greenstone, and of petrosilex.
Summary Narrative of an Exploratory Expedition to the Sources of the Mississippi River, in 1820 | Henry Rowe Schoolcraft
British Dictionary definitions for amygdaloid
/ (əˈmɪɡdəˌlɔɪd) /
a volcanic igneous rock containing amygdales
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
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