Glass

biographical name

ˈglas 

Carter 1858–1946 American statesman

Kids Definition

glass

1 of 2 noun

ˈglas 

1

: a hard brittle usually transparent substance commonly formed by melting a mixture of sand and chemicals and cooling to hardness

2

a

: something (as a water tumbler, lens, mirror, barometer, or telescope) that is made of glass or has a glass lens

b

plural : a pair of glass or plastic lenses held in a frame and used to help one see clearly or to protect the eyes

3

: the quantity held by a glass

glassful

-ˌfu̇l 

noun

glass

2 of 2 verb

: to fit or protect with glass

Medical Definition

glass

noun

ˈglas 

often attributive

1

a

: an amorphous inorganic usually transparent or translucent substance consisting of a mixture of silicates or sometimes borates or phosphates formed by fusion of silica or of oxides of boron or phosphorus with a flux and a stabilizer into a mass that cools to a rigid condition without crystallization

b

: a substance resembling glass especially in hardness and transparency

organic glasses made from plastics

2

a

: an optical instrument or device that has one or more lenses and is designed to aid in the viewing of objects not readily seen

b

glasses plural : a device used to correct defects of vision or to protect the eyes that consists typically of a pair of glass or plastic lenses and the frame by which they are held in place

called also eyeglasses