%incurvation%

n. [ L. incurvatio: cf. F. incurvation. ] [ 1913 Webster ]

1. The act of bending, or curving. [ 1913 Webster ]

2. The state of being bent or curved; curvature. [ 1913 Webster ]

An incurvation of the rays. Derham. [ 1913 Webster ]

3. The act of bowing, or bending the body, in respect or reverence. “The incurvations of the knee.” Bp. Hall. [ 1913 Webster ]