convexity
Concise Oxford English Dictionary © 2008 Oxford University Press:
convex /ˈkɒnvɛks/
▶adjective having an outline or surface curved like the exterior of a circle or sphere. Compare with concave.
– derivatives
convexity noun,
convexly adverb.
convexity noun,
convexly adverb.
– origin C16: from L. convexus ‘vaulted, arched’.
'convexity' also found in these Oxford entries:

