1
a
: concrete
b
: a powder of alumina, silica, lime, iron oxide, and magnesium oxide burned together in a kiln and finely pulverized and used as an ingredient of mortar and concrete
also
: any mixture used for a similar purpose
2
: a binding element or agency: such as
a
: a substance to make objects adhere to each other
b
: something serving to unite firmly
justice is the cement that holds a political community together—
R. M. Hutchins
R. M. Hutchins3
: cementum
4
: a plastic composition made especially of zinc or silica for filling dental cavities
5
: the fine-grained groundmass or glass of a porphyry
cemented; cementing; cements
1
: to unite or make firm by or as if by cement
Pebbles were cemented together by clay.
has cemented his role as a leader on the team—T. W. Smith
T. W. Smith2
: to overlay with concrete
cemented the cellar floor
: to become cemented
cementer
noun
Examples of cement in a Sentence
Noun
There is a layer of cement under the bricks.
what kind of cement works best on glass and pottery?
Verb
A win would cement her reputation as a strong competitor.
Recent Examples on the Web
Danny Emerman, The Mercury News, 23 Feb. 2025
So houses are mostly Mediterranean, wrapped with stucco or fiber cement — noncombustible materials — with a few splashes of stone and brick thrown in.
—Jack Flemming, Los Angeles Times, 19 Feb. 2025
Kevin Williams, Quartz, 28 Feb. 2025
Eleven months after Jackson County voters rejected the Chiefs and Royals’ stadium proposals, the teams’ desire to cement their long-term futures has sparked some movement in a familiar location:
Back in Missouri.
—Sam McDowell, Kansas City Star, 27 Feb. 2025
See All Example Sentences for cement
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Noun
There were oohs and ahhs as Iguodala unveiled his medallion on the Thrive City cement, becoming the seventh figure on the Walk of Fame.
—Danny Emerman, The Mercury News, 23 Feb. 2025
So houses are mostly Mediterranean, wrapped with stucco or fiber cement — noncombustible materials — with a few splashes of stone and brick thrown in.
—Jack Flemming, Los Angeles Times, 19 Feb. 2025
Verb
Costco’s board responded that its diversity programs comply with the law, and cemented its commitment to diversifying its supplier base — including giving special consideration to small businesses.
—Kevin Williams, Quartz, 28 Feb. 2025
Eleven months after Jackson County voters rejected the Chiefs and Royals’ stadium proposals, the teams’ desire to cement their long-term futures has sparked some movement in a familiar location:
Back in Missouri.
—Sam McDowell, Kansas City Star, 27 Feb. 2025
See All Example Sentences for cement
Cite this Entry
“Cement.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cement. Accessed 13 Mar. 2025.
Copy CitationKids Definition
cement
1 of 2 noun
ce·ment
si-ˈment 
cement
2 of 2 verb1
: to unite by or as if by cement
cemented their friendship
2
: to cover with concrete
cementer
noun
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