Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

plagioclase

play
noun pla·gio·clase \ˈplā-j(ē-)ə-ˌklās, ˈpla-, -ˌklāz\

Definition of plagioclase

  1. :  a triclinic feldspar; especially :  one having calcium or sodium in its composition



Origin and Etymology of plagioclase

Greek plagios oblique + klasis breaking, from klan to break — more at clast


First Known Use: circa 1868


Learn More about plagioclase


Seen and Heard

What made you want to look up plagioclase? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a simplified speech bridging languages

Get Word of the Day daily email!