cyclone

cyclone
[ˈsʌɪkləʊn]
noun
  1. (Meteorology)a system of winds rotating inwards to an area of low barometric pressure, with an anticlockwise (northern hemisphere) or clockwise (southern hemisphere) circulation; a depression
    (气象)旋风;龙卷风
    ■another term for tropical storm
    同 tropical storm
派生
cyclonic
adjective
cyclonically
adverb
语源
  1. mid 19th cent.: probably from Greek kuklōma 'wheel, coil of a snake', from kuklos 'circle'. The change of spelling from -m to -n is unexplained
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