plural cavities
1
: an unfilled space within a mass
especially
: a hollowed-out space
2
: an area of decay in a tooth : caries
Examples of cavity in a Sentence
Some birds nest in tree cavities.
I had two cavities filled at the dentist's.
Recent Examples on the Web
Now, new research has found another potential health risk linked to these sugary drinks—oral cavity cancer.
—
Brian Mastroianni, Health, 16 Apr. 2025
Meanwhile, public health authorities, including the American Dental Association, support fluoride being put in drinking water to prevent cavities.
—Neal Earley, Arkansas Online, 16 Apr. 2025
As delicate tendrils emerge from its nose cavity, the stalker makes just enough noise to cause Ellie to whip around.
—Sara Netzley, EW.com, 14 Apr. 2025
There may be no exploding ferry boats or bombs inside chest cavities in this show, but there is a terrifying sequence of a doctor whose baby is cut out of her by a mentally ill patient!
—Annabel Gutterman, Time, 11 Apr. 2025
See All Example Sentences for cavity
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Brian Mastroianni, Health, 16 Apr. 2025
Meanwhile, public health authorities, including the American Dental Association, support fluoride being put in drinking water to prevent cavities.
—Neal Earley, Arkansas Online, 16 Apr. 2025
As delicate tendrils emerge from its nose cavity, the stalker makes just enough noise to cause Ellie to whip around.
—Sara Netzley, EW.com, 14 Apr. 2025
There may be no exploding ferry boats or bombs inside chest cavities in this show, but there is a terrifying sequence of a doctor whose baby is cut out of her by a mentally ill patient!
—Annabel Gutterman, Time, 11 Apr. 2025
See All Example Sentences for cavity
Cite this Entry
“Cavity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cavity. Accessed 2 May. 2025.
Copy CitationKids Definition
cavity
noun
cav·i·ty
ˈkav-ət-ē 
plural cavities
1
: a hollow place
especially
: an unfilled bodily space
lung cavity
2
: a hole hollowed out in a tooth by decay
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