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amygdule Syllabification: a·myg·dule
Pronunciation: /əˈmiɡˌd(y)o͞ol/
(also amygdale-ˌdāl)

Definition of amygdule in English:


A vesicle in an igneous rock, containing secondary minerals.
Example sentences
  • Segregation vesicles are therefore distinguished from amygdales because they are infilled with chilled magma, whereas amygdales represent the infilling of vesicles from post-emplacement fluids.
  • Some consist of pear-shaped segregation vesicles with amygdales at their upper margin.
  • If, after the lava has cooled and set, the vesicles are filled with minerals, they are known as amygdales.


Late 19th century: from French, from Latin amygdala (see amygdala).

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