Dictionary

anorthosite

noun an·or·tho·site \ə-ˈnr-thə-ˌsīt\

Definition of ANORTHOSITE

:  a granular plutonic igneous rock composed almost exclusively of a soda-lime feldspar (as labradorite)
an·or·tho·si·tic \ə-ˌnr-thə-ˈsi-tik\ adjective

Origin of ANORTHOSITE

French anorthose, a feldspar, from a- + Greek orthos — more at orth-
First Known Use: 1863

Browse

Next Word in the Dictionary: AnosiaPrevious Word in the Dictionary: anorthoseAll Words Near: anorthosite
May 23, 2015
debouch Hear it
to emerge or cause to emerge
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears