Adjective
Made
of
material
produced
by
the
high-temperature
firing
of
inorganic
,
nonmetallic
rocks
and
minerals
.
Noun
A
hard
,
brittle
,
inorganic
,
nonmetallic
material
,
usually
made
from
a
material
,
such
as
clay
,
then
firing
it
at
a
high
tempature
.