The story
- Late Latin · borrowed fromcavitās
- Middle French · borrowed fromcavité
- English todaycavity
From Middle French cavité or Late Latin cavitās, from cav(i) (“hollow, excavated, concave”) + -tās (“-ity”, nominal suffix). First attested in the Mid-16th c.
Etymology from Wiktionary, CC BY-SA 4.0.