Definition of amygdale in English:

Share this entry


Pronunciation: /əˈmɪɡdeɪl/


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.