biotite

[ bahy-uh-tahyt ]
/ ˈbaɪ əˌtaɪt /
|

noun

a very common mineral of the mica group, occurring in black, dark-brown, or dark-green sheets and flakes: an important constituent of igneous and metamorphic rocks.

Nearby words

  1. biotic,
  2. biotic factor,
  3. biotic potential,
  4. biotin,
  5. biotinide,
  6. biotope,
  7. biotoxicology,
  8. biotoxin,
  9. biotransformation,
  10. biotron

Origin of biotite

1860–65; named after J. B. Biot (1774–1862), French mineralogist and mathematician; see -ite1

Related formsbi·o·tit·ic [bahy-uh-tit-ik] /ˌbaɪ əˈtɪt ɪk/, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for biotite


British Dictionary definitions for biotite

biotite

/ (ˈbaɪəˌtaɪt) /

noun

a black or dark green mineral of the mica group, found in igneous and metamorphic rocks. Composition: hydrous magnesium iron potassium aluminium silicate. Formula: K(Mg,Fe) 3 (Al,Fe)Si 3 O 10 (OH) 2 . Crystal structure: monoclinic
Derived Formsbiotitic (ˌbaɪəˈtɪtɪk), adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for biotite

biotite

[ bīə-tīt′ ]

A dark-brown or dark-green to black mica. Biotite is monoclinic and is found in igneous, metamorphic, and sedimentary rocks. Chemical formula: K(Mg,Fe)3(Al,Fe)Si3O10(OH)2.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.