glass
verb
glassed; glassing; glasses
1
a
: to provide with glass : glaze sense 1
b
: to enclose, case, or wall with glass
the sunroom was glassed in
2
: to make glassy
3
a
: reflect
b
: to see mirrored
4
: to look at through an optical instrument (such as a pair of binoculars)
Examples of glass in a Sentence
Recent Examples on the Web
His eyes were glassed over and his tongue was swollen.
—
Sabrina Reed, Forbes.com, 25 May 2026
The patio is shaded and glassed in, but with open panels above to allow for airflow.
—Camila Pedrosa, Sacbee.com, 15 May 2026
Among the ample communal spaces, the Conservatory stands out, created by glassing over what was an open courtyard on the lower floor of the building.
—Condé Nast, Condé Nast Traveler, 23 Apr. 2026
There is a safe zone room that’s glassed off.
—Steve Sadin, Chicago Tribune, 8 Apr. 2026
See All Example Sentences for glass
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Sabrina Reed, Forbes.com, 25 May 2026
The patio is shaded and glassed in, but with open panels above to allow for airflow.
—Camila Pedrosa, Sacbee.com, 15 May 2026
Among the ample communal spaces, the Conservatory stands out, created by glassing over what was an open courtyard on the lower floor of the building.
—Condé Nast, Condé Nast Traveler, 23 Apr. 2026
There is a safe zone room that’s glassed off.
—Steve Sadin, Chicago Tribune, 8 Apr. 2026
See All Example Sentences for glass
Cite this Entry
“Glass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/glass. Accessed 9 Jun. 2026.
Copy CitationKids Definition
glass
1 of 2 noun
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
glass
2 of 2 verb
: to fit or protect with glass
Medical Definition
glass
nounoften 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
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