[{"Bold_text": "adjective", "List Items": ["having a surface that is curved or rounded outward.Compare concave(def1) concave(def1).", "Mathematics.(of a polygon) having all interior angles less than or equal to 180°.(of a set) having the property that for each pair of points in the set the line joining the points is wholly contained in the set.", "(of a polygon) having all interior angles less than or equal to 180°.", "(of a set) having the property that for each pair of points in the set the line joining the points is wholly contained in the set."]}, {"Bold_text": "noun", "List Items": ["a convex surface, part, or thing."]}]