often attributive
1
: any of various amorphous materials formed from a melt by cooling to rigidity without crystallization: such as
a
: a usually transparent or translucent material consisting typically of a mixture of silicates
b
: a material (such as obsidian) produced by fast cooling of magma
2
b(1)
: an optical instrument or device that has one or more lenses and is designed to aid in the viewing of objects not readily seen
(2)
: field glasses, binoculars
—usually used in plural
c
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, spectacles
3
: the quantity held by a glass container
4
5
: crystal meth
specifically
: a pure form of crystal meth
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)
Synonyms
Examples of glass in a Sentence
Noun
The waiter filled our glasses with water.
She drank two glasses of water.
She was wearing dark glasses with thick black frames.
Recent Examples on the Web
Cerys Davies, Los Angeles Times, 27 Sep. 2024
Blue light and lifestyle In addition to the skincare advances that reinvent the anti-aging niche market, there are other ways to cope beyond reducing the use of screens and wearing blue light glasses, of course.
—Ana Morales, Vogue, 27 Sep. 2024
Jenny Nguyen-Wheatley, Outside Online, 17 Sep. 2024
My guide smiled but continued glassing the distant hills.
—Bruce Brady, Outdoor Life, 12 Sep. 2024
See all Example Sentences for glass 
Noun
With glass front-facing windows and raw wooden bookshelves, the store is filled with anything from graphic novels and picture books to poetry anthologies and adult novels — a new venture for the duo.
—Cerys Davies, Los Angeles Times, 27 Sep. 2024
Blue light and lifestyle In addition to the skincare advances that reinvent the anti-aging niche market, there are other ways to cope beyond reducing the use of screens and wearing blue light glasses, of course.
—Ana Morales, Vogue, 27 Sep. 2024
Verb
Overall, these gloves are great to have on hand whenever there is danger of extremely cold or unpredictable weather, like during pack hunting or glassing in the mountains over multi-day trips.
—Jenny Nguyen-Wheatley, Outside Online, 17 Sep. 2024
My guide smiled but continued glassing the distant hills.
—Bruce Brady, Outdoor Life, 12 Sep. 2024
See all Example Sentences for glass
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'glass.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near glass
Cite this Entry
“Glass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/glass. Accessed 5 Oct. 2024.
Copy CitationKids Definition
glass
1 of 2 noun1
: 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
Biographical Definition
Glass
2 of 2biographical name (2)
Philip 1937– American composer
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