Definition of cavity in English:

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Pronunciation: /ˈkavɪti/

noun (plural cavities)

1An empty space within a solid object: the abdominal cavity
More example sentences
  • Sinuses are air-filled, hollow spaces or cavities within the facial bones surrounding your nose.
  • It consisted of filling the empty space of cavities with hydrogen atoms and drawing the surface contour of the H atoms.
  • These animals are thought to survive only if ice is confined to their body cavity and other extracellular spaces.
space, chamber, hollow, hole, pocket, pouch;
orifice, aperture;
socket, gap, crater, pit;
cutting, concavity;
Anatomy  lacuna, sac, alveolus, ampulla, antrum, archenteron, bulla, bursa, lumen, orbit, sinus, ventricle, vesicle;
Zoology  calyx;
Botany  cyst;
Geology  geode, vug
1.1A decayed part of a tooth: most dentists fill cavities right away
More example sentences
  • If the teeth are not cleaned properly they may be vulnerable to tooth decay causing cavities, or to gum disease.
  • He described techniques for scraping out caries and filling the cavities with soft metals such as tin, lead, or gold.
  • I know two mothers with toddlers who nurse several times a night and have extensive tooth decay and cavities.



Pronunciation: /ˈkavɪt(ə)ri/
Example sentences
  • Because patients with cavitary pulmonary TB are more likely than those without pulmonary cavities to be sputum AFB smear-positive, patients with cavitary pulmonary disease have greater potential to transmit TB.
  • There was a solitary, well-circumscribed, 1.5 × 1.0 × 1.0-cm cavitary lesion in the cranium filled with dense, yellow fibrous tissue.
  • Of the 443 patients who had a chest radiograph report available, 173 were found to have cavitary involvement.


Mid 16th century: from French cavité or late Latin cavitas, from Latin cavus 'hollow'.

Words that rhyme with cavity

concavity, depravity, gravity

For editors and proofreaders

Line breaks: cav¦ity

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