biotite

B3I1O1T1I1T1E1
/ˈbaɪəˌtaɪt/

noun

A dark brown mica; it is a mixed aluminosilicate and fluoride of potassium, magnesium and iron.

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Meanings

nounbiotite (countable and uncountable, plural biotites)

plural biotites

  1. countableuncountablechemistryA dark brown mica; it is a mixed aluminosilicate and fluoride of potassium, magnesium and iron.

Origin

From Biot + -ite, named by J.F.L. Hausmann in 1847 in honour of the French physicist Jean-Baptiste Biot, who, in 1816, researched the optical properties of mica, discovering many unique properties.

Full word history & related roots →

Translations

Catalan biotita
  • biotitadark brown mica
Czech biotit
  • biotitdark brown mica
Dutch biotiet
  • biotietdark brown mica
Esperanto biotito
  • biotitodark brown mica
Estonian biotiit
  • biotiitdark brown mica
Finnish biotiitti
  • biotiittidark brown mica
French biotite
  • biotitedark brown mica
German Biotit
  • Biotitdark brown mica
Icelandic bíótít
  • bíótítdark brown mica
Italian biotite
  • biotitedark brown mica
Japanese 黒雲母
  • 黒雲母 (kurounmo)dark brown mica
Norwegian Bokmål biotitt
  • biotittdark brown mica
Polish biotyt
  • biotytdark brown mica
Portuguese biotita
  • biotitadark brown mica
Romanian biotit
  • biotitdark brown mica
Russian биотит
  • биотит (biotit)dark brown mica
Slovak biotit
  • biotitdark brown mica
Spanish biotita
  • biotitadark brown mica
Turkish biyotit
  • biyotitdark brown mica
Cite this entry
APA

biotite. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/biotite

MLA

“biotite.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/biotite. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “biotite,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/biotite.

Source: biotite on Wiktionary, CC BY-SA 4.0.