Convexity is a related term of tumescence.
As nouns the difference between convexity and tumescence
is that convexity
is the state of being convex while tumescence
is a swelling due to the presence of fluid.
the state of being convex
a convex line or surface
a measure of the curvature in the relationship between the prices and yields of bonds
A swelling due to the presence of fluid.
A swollen bodily organ; used especially of erectile tissue.