biotite Hear it!

biotite definition

bio·tite (bī′ə tīt′)

noun

a dark-colored, soft, monoclinic mica, K(Mg,Fe)(Al,Fe)SiO(OH), found in igneous, metamorphic, and sedimentary rocks

Etymology: Ger biotit: so named after J. B. Biot (1774-1862), Fr physicist + -it, -ite

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.