[{"Bold_text": "noun", "List Items": ["Meteorology.a large-scale, atmospheric wind-and-pressure system characterized by low pressure at its center and by circular wind motion, counterclockwise in the Northern Hemisphere, clockwise in the Southern Hemisphere.Compare anticyclone , extratropical cyclone extratropical cyclone, subtropical cyclone subtropical cyclone, tropical cyclone tropical cyclone.", "(not in technical use) tornado(def1) tornado(def1).", "Also calledcy·clone col·lec·tor[sahy, -klohn k, uh, -lek-ter],Machinery.a device for removing small or powdered solids from air, water, or other gases or liquids by centrifugal force."]}]