incurvation

adjective

1. curved, especially inward.

verb (used with object), in·cur·vat·ed, in·cur·vat·ing.

2. to make curved; turn from a straight line or course; curve, especially inward.

verb (ˈɪnkɜːˌveɪt) incurve (ɪnˈkɜːv)

1. to curve or cause to curve inwards

adjective (ɪnˈkɜːvɪt, -veɪt)

2. curved inwards

n.

1. A curvature that turns inward.