noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A monoclinic-prismatic mineral containing aluminum, calcium, fluorine, hydrogen, iron, magnesium, oxygen, potassium, and silicon. countable, uncountable

Etymology

From hydro- + biotite.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.