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1542 results about "Concave side" patented technology

2 : arched in : curving in —used of the side of a curve or surface on which neighboring normals to the curve or surface converge and on which lies the chord joining two neighboring points of the curve or surface. concave. noun. con·​cave | \ ˈkän-ˌkāv \. Definition of concave (Entry 2 of 2) : a concave line or surface.