glass

1 of 2

noun

ˈglas How to pronounce glass (audio)
ˈgläs
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
a
: something made of glass: such as
(1)
: tumbler
also : glassware
(2)
: mirror
(3)
(4)
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
glassful noun
glassless adjective

glass

2 of 2

verb

glassed; glassing; glasses

transitive verb

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
b
: to see mirrored
4
: to look at through an optical instrument (such as a pair of binoculars)

Example Sentences

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
Noun
Place fillet, skin-side down on a rimmed baking sheet or large glass container. Kim Sunée, Anchorage Daily News, 18 Nov. 2022 Its robust firebox can hold up to 30 pounds of wood, features an oversized ceramic glass window, and will fit logs up to 22 inches long. Alex Rennie, Popular Mechanics, 18 Nov. 2022 Dozens of exhibitors were packing up the contents of their glass showcases, which sparkled with jewelry worth tens of millions of dollars. Daniel Miller, Los Angeles Times, 18 Nov. 2022 Thus, each glass is like the bottle was just opened. Paris Wolfe, cleveland, 18 Nov. 2022 Paramedics discovered a glass crack pipe near Williams’s body. Wesley Lowery, Men's Health, 18 Nov. 2022 Screens for the rear passengers are mounted in the leather and carbon-fiber front seats, while a panoramic glass roof sits overhead. Caleb Miller, Car and Driver, 17 Nov. 2022 Hypermodern glass and steel may be shaping our cities of the future — and the supertall skyscrapers that continue to punch through their skylines — but some architects are looking instead to humanity's oldest dwelling: the humble cave. Jacqui Palumbo, CNN, 17 Nov. 2022 Like its neighbor, it is expected to include features that invite the public through the use of glass walls and outdoor spaces that lead to the new San Pedro Creek Culture Park. Danya Perez, San Antonio Express-News, 17 Nov. 2022
Verb
Climate activists in Austria on Tuesday attacked a famous painting by artist Gustav Klimt with a black, oily liquid and one then glued himself to glass protecting the painting’s frame. Kirsten Grieshaber, Fortune, 15 Nov. 2022 As businesses switch from plastic containers to glass to meet their sustainable packaging goals, competition for bottles is intensifying. Carol Ryan, WSJ, 23 Aug. 2022 In 1825, the Boston Sandwich Glass Company relocated to Cape Cod because the sand lends itself nicely to glass blowing. Lea Lane, Forbes, 6 July 2022 One of his first acts as Colorado athletic director in 2005 was to change the large wooden doors of his office to glass to encourage visitors. Los Angeles Times, 22 Nov. 2021 It can be made in a variety of materials, from masonry and plastic to glass ad metal. Calvin Finch, San Antonio Express-News, 24 Sep. 2021 The northern Italian city of Venice is a world leader in artisan crafts, from mask making to glass blowing. Rebecca Ann Hughes, Forbes, 21 Sep. 2021 Peach & Lily Your roadmap to glass skin begins (and ends) here. Talia Abbas, Glamour, 27 Aug. 2021 All of the homes on the tour have a great room with an island to gather around and glass doors that slide away to an outdoor oasis. oregonlive, 4 Aug. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'glass.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

Etymology

Noun

Middle English glas, from Old English glæs; akin to Old English geolu yellow — more at yellow

First Known Use

Noun

before the 12th century, in the meaning defined at sense 1

Verb

14th century, in the meaning defined at transitive sense 1a

Time Traveler
The first known use of glass was before the 12th century

Dictionary Entries Near glass

Cite this Entry

“Glass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/glass. Accessed 28 Nov. 2022.

Kids 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
glassful noun

glass

2 of 2

verb

: to fit or protect with glass

Medical Definition

glass

noun

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

Biographical Definition

Glass 1 of 2

biographical name (1)

Carter 1858–1946 American statesman

Glass

2 of 2

biographical name (2)

Philip 1937–     American composer

More from Merriam-Webster on glass

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