convexity (n.)
- arching
- belly
- boss
- bump
- circularity
- colophon
- concavity
- convolution
- crookedness
- curvation
- curvature
- cylindricality
- dent
- dint
- embossment
- excrescence
- fingerprint
- footmark
- footprint
- footstep
- globosity
- impress
- impression
- imprint
- incurvation
- incurvature
- indent
- indentation
- indention
- lump
- pad
- pimple
- pug
- rotundity
- rotundness
- roundness
- seal
- signet
- sinuosity
- sinuousness
- sphericalness
- sphericity
- stamp
- step
- stud
- thumbprint
- tortuosity
- tortuousness
- vaulting
- vestige
