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virvelvind form.
gen. whirlwind
earth.sc. wind eddy
environ. 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; cyclone; tornado
life.sc. whirl wind