incurvation Meaning, Definition & Usage

  1. noun a shape that curves or bends inward
    concave shape; concavity; incurvature.
  2. noun the action of creating a curved shape

WordNet

In`cur*va"tion noun
Etymology
L. incurvatio: cf. F. incurvation.
Definitions
  1. The act of bending, or curving.
  2. The state of being bent or curved; curvature.
    An incurvation of the rays. Derham.
  3. The act of bowing, or bending the body, in respect or reverence. "The incurvations of the knee." Bp. Hall.

Webster 1913