NATURAL GLASS

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

Magma of any composition that cooled very rapidly

Classified under:

Nouns denoting substances

Hypernyms ("natural glass" is a kind of...):

glass (a brittle transparent solid with irregular atomic structure)

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

crystal; lechatelierite; quartz; quartz glass; vitreous silica (colorless glass made of almost pure silica)

tektite (thought to derive from meteorites)

Credits