凸起 Traditional form: 凸起 Pinyin (reading): tūqǐ Definitions: convex protruding to protrude to bulge to buckle upwards Characters: 凸 - to protrude, to bulge out; convex 起 - to begin, to initiate; to rise, to stand up Traditional characters: 凸 - to protrude, to bulge out; convex 起 - to begin, to initiate; to rise, to stand up