Definition of amygdule in English:

Share this entry

amygdule

Pronunciation: /əˈmiɡˌd(y)o͞ol/
(also amygdale /-ˌdāl/)

noun

Geology
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.

Origin

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

For editors and proofreaders

Syllabification: a·myg·dule

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.