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
3
: 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
2
: to overlay with concrete
cemented the cellar floor
: to become cemented
cementer
noun
Synonyms
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
Shelly Bradbury, The Denver Post, 28 Nov. 2024
Drive the stakes into the soft ground next to the cement or pavement.
—Zach Bradshaw, The Arizona Republic, 26 Nov. 2024
Danny Emerman, The Mercury News, 6 Nov. 2024
Colorado is looking to cement its blue reputation in the 2024 election.
—John Frank, Axios, 5 Nov. 2024
See all Example Sentences for cement 
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Noun
Horses are meant to be on all fours, not stuck on their rear ends in a cement culvert.
—Verb
Draymond Green, who struggled with his jump shot on the night, hit three of four in the final minute to cement the win.
—Dictionary Entries Near cement
Cite this Entry
“Cement.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cement. Accessed 2 Dec. 2024.
Kids 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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