Noun, pl. cavities
1.(Science: anatomy)
A hollow place or space or a potential space, within the body or in one of its organs, it may be normal or pathological. (biology-online.org)
2. A fluid filled space in many animals where organs typically develop, as in body cavity. (wikipedia.org)
3. (Dentistry)
Damage to the structure of a tooth (wikipedia.org), or a soft area in a decayed tooth. (wiktionary.org)
Syn: Dental caries
Word origin: From Late Latin cavitas, from Latin cavus (“hollow”), from Proto-Indo-European *ḱówHwos, from root Proto-Indo-European *ḱówH-