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amygdule

[uh-mig-dool, -dyool]
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noun Petrology.
  1. one of the mineral nodules in an amygdaloid.
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Also a·myg·dale [uh-mig-deyl] /əˈmɪg deɪl/.

Origin of amygdule

First recorded in 1875–80; amygd(ala) + -ule
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for amygdale

amygdale

noun
  1. a vesicle in a volcanic rock, formed from a bubble of escaping gas, that has become filled with light-coloured minerals, such as quartz and calciteAlso called: amygdule (əˈmɪɡdjuːl)
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Word Origin

C19: from Greek: almond
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