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
Expert Panel®, Forbes.com, 14 Apr. 2025
Unlike other stability shoes, which can feel like cement bricks, these sleek shoes are lightweight and comfortable.
—Gabrielle Kassel, Glamour, 11 Apr. 2025
Henry Flynn, Forbes.com, 16 Apr. 2025
While Peggy continues to cement herself as a powerful muckracker, Marian Brook (Louisa Jacobson) defies the housebound expectations of her Aunt Agnes (Christine Baranski) to become an English-as-a-second language teacher.
—Elise Taylor, Vogue, 16 Apr. 2025
See All Example Sentences for cement
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Noun
Authenticity cements trust, fuels collaboration and nurtures growth.
—Expert Panel®, Forbes.com, 14 Apr. 2025
Unlike other stability shoes, which can feel like cement bricks, these sleek shoes are lightweight and comfortable.
—Gabrielle Kassel, Glamour, 11 Apr. 2025
Verb
As Swansea looks to cement itself as the country’s dominant force, whether Modric—a European who’s experienced English soccer at Tottenham Hotspur—complements or disrupts the U.S. owners’ thinking will be fascinating.
—Henry Flynn, Forbes.com, 16 Apr. 2025
While Peggy continues to cement herself as a powerful muckracker, Marian Brook (Louisa Jacobson) defies the housebound expectations of her Aunt Agnes (Christine Baranski) to become an English-as-a-second language teacher.
—Elise Taylor, Vogue, 16 Apr. 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 22 Apr. 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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