BIOTITE

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

Dark brown to black mica found in igneous and metamorphic rock

Classified under:

Nouns denoting substances

Hypernyms ("biotite" is a kind of...):

isinglass; mica (any of various minerals consisting of hydrous silicates of aluminum or potassium etc. that crystallize in forms that allow perfect cleavage into very thin leaves; used as dielectrics because of their resistance to electricity)

Hyponyms (each of the following is a kind of "biotite"):

lepidomelane (a mica that is a biotite containing iron)

Derivation:

biotitic (relating to or involving biotite)

Credits