Added 1 October 2026 convexity noun Categories: Describing WordsRare Words noun ! Definition from Wiktionary (CC BY-SA). More about convexity at Wordnik → Where our words come from → 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. Related Words: convexnessconvexednessconcavo-convexityconvexivityhyperconvexityquasiconvexityconcavityconcavenessbiconvexitysubconvexitynonconvexity Back to today's word