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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

matter go
that which has mass and occupies space

solid go
matter that is solid at room temperature and pressure

glass
a brittle transparent solid with irregular atomic structure

noun.substance

13 Subcategories

natural glass go
magma of any composition that cooled very rapidly
opal glass, milk glass go
a milky white translucent or opaque glass
optical glass go
clear homogeneous glass of known refractive index
crown glass go
a glass blown into a globe which is later flattened and spun to form a disk
soft glass go
glass having a relatively low softening point
ground glass go
glass that diffuses light due to a rough surface produced by abrasion or etching
ground glass go
particulate glass made by grinding and used as an abrasive
lead glass go
glass containing lead oxide
safety glass, laminated glass, shatterproof glass go
glass made with plates of plastic or resin or other material between two sheets of glass to prevent shattering
water glass, soluble glass, sodium silicate go
a viscous glass consisting of sodium silicate in solution
stained glass go
glass that has been colored in some way
wire glass go
a glass that contains a layer of wire netting in it
Pyrex go
a borosilicate glass with a low coefficient of expansion