- the quality or condition of being concave
- pl. -·ties a concave surface, line, etc.
Origin of concavityMiddle English and Old French concavite from Late Latin concavitas
- The state of being curved like the inner surface of a sphere.
- A surface or structure configured in such a curve.
(countable and uncountable, plural concavities)
- (uncountable) The state of being concave
- (countable) A concave structure or surface
From Old French concavité.