凸性 tūxìng convexity Origin Definitions Defs Strokes Stroke Words Sentences Sents 凸 tū verb protruding to stick out or protrude; convex; describes a male connector. This is the opposite of 凹 āo.性 xìng affix [-ity] Suffix used after verbs or adjectives to form nouns expressing a state, quality, or scope, similar to English "-ity", "-ness", or "-ism".