natural glass

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Noun1.natural glass - magma of any composition that cooled very rapidlynatural glass - magma of any composition that cooled very rapidly
lechatelierite, quartz, quartz glass, vitreous silica, crystal - colorless glass made of almost pure silica
tektite - thought to derive from meteorites
glass - a brittle transparent solid with irregular atomic structure
References in periodicals archive ?
The line includes all-purpose cleaner, glass + surface natural glass cleaner and bathroom tub + tile cleaner.
The pitch at the Bluebirds' home is a weave of synthetic and natural glass and has to cope with regular football and rugby matches.
Most of these natural glass droplets occur in the form of microspherules ranging in size from 1mm to a few tens of micrometers (Fig.
I don't expect it, I just dream one day we can squeeze our head past what I think is our natural glass ceiling and get there from the league.