concavity Meaning, Definition & Usage

  1. noun a shape that curves or bends inward
    concave shape; incurvature; incurvation.
  2. noun the property possessed by a concave shape
    concaveness.

WordNet

Con*cav"i*ty noun
Etymology
L. concavitas: cf. F. concavité. See Concave.
Wordforms
plural Concavities
Definitions
  1. A concave surface, or the space bounded by it; the state of being concave.

Webster 1913