Share this entry

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).

Share this entry


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day luxe
Pronunciation: lʌks
expensive and of high quality; luxurious