Incurvation

Noun

1. The act of acquiring or being given a curved form; an instance of curving or bending.
2. The state of being curved or bent; any curved shape or formation; curvature; a curve; a bend. A curving inwards; the condition of being curved inwards.
3. A curving inwards; the condition of being curved inwards.
4. Bowing in reverence or worship.