cavity

 
Pronunciation: /ˈkavɪti/

noun (plural cavities)

  • an empty space within a solid object: the abdominal cavity
  • a decayed part of a tooth: most dentists fill cavities right away

Derivatives

cavitary

Pronunciation: /ˈkavɪt(ə)ri/
adjective

Origin:

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