curvity

from The Collaborative International Dictionary of English v.0.48

Curvity \Cur"vi*ty\ (k?r"v?-y?), n. [L. curvitas, from curvus
   bent: cf. F. curvit['e].]
   The state of being curved; a bending in a regular form;
   crookedness. --Holder.
   [1913 Webster]