| envir. |
hurricane; air-classifier; cyclone A storm characterized by the converging and rising giratory movement of the wind around a zone of low pressure (the eye) towards which it is violently pulled from a zone of high pressure. Its circulation is counterclockwise round the center in the northern hemisphere, clockwise in the southern hemisphere; hurricane A tropical cyclone of great intensity; any wind reaching a speed of more than 73 miles per hour (117 kilometers per hour) is said to have hurricane force; air-separator; centrifugal collector |
