dioptase Hear it!

dioptase definition

di·op·tase (dī äp′tās′)

noun

a hard, green, brittle, crystalline mineral, CuSiO·6HO, hydrous copper silicate, used in making jewelry

Etymology: Fr < Gr dia-, through + optazein, to see < optos, visible < ops, eye

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.