cyclone
/ˈsaɪkləʊn/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】气旋, 低气压。
1.1
- another term for TROPICAL STORM.
派生词
cyclonic
adjectivecyclonically
adverb词源
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.