| ribbon [`rib·ǝn] BUILDING CONSTRUCTION A horizontal piece of wood nailed to the face of studs; usually used to support the floor joists. GRAPHIC ARTS A narrow band of inked fabric in a typewriter or other printing machine with which type is printed by striking keys against it. MATHEMATICS The plane figure generated by a straight line which moves so that it is always perpendicular to the path traced by its middle point. PETROLOGY One of a set of parallel bands in a rock or mineral. |