Cyclone

Noun

 * 1) A system of winds rotating around a center of low atmospheric pressure. A cyclone rotates counterclockwise in the northern hemisphere and clockwise in the southern hemisphere (opposite to that of an anticyclone). Modern meteorology restricts the use of the term cyclone to the cyclonic-scale circulations. But, it is still applied popularly to the more or less violent, small-scale circulations such as tornadoes, waterspouts, and dust devils (which may in fact exhibit anticyclonic rotation), and even, very loosely, to any strong wind. Because cyclonic circulation and relative low atmospheric pressure usually coexist, in common practice the terms cyclone and low are used interchangeably. Also, because cyclones nearly always are accompanied by inclement (sometimes destructive) weather, they are frequently referred to simply as storms.
 * 2) A Southeastern and Indian Ocean weather phenomenon that results in wind speeds of around 150 to 200 km/h.

Derived terms

 * anticyclone

Adjectives
human; lurking; impending; destructive; periodic; seasonable; threatening; rumbling; whirling.

Thesaurus
air mass, anticyclone, baguio, blaze, burst, cold front, cold sector, convulsion, dirty weather, dust devil, eruption, explosion, fit, flare-up, foul weather, front, gale, gust, high, high-pressure area, hurricane, irruption, isobar, isometric, isometric line, isopiestic line, isotherm, isothermal line, line squall, low, low-pressure area, occluded front, outbreak, outburst, paroxysm, polar front, rainspout, rainstorm, rotary storm, rough weather, sand column, sandspout, seizure, snowstorm, spasm, squall, squall line, stationary front, storm, stormy weather, tempest, tempestuous rage, thunderstorm, tornado, twister, typhoon, upheaval, warm front, waterspout, weather map, whirlblast, whirlwind, wind eddy, wind-shift line, windstorm

Etymology
From κυκλῶν:, present active participle of κυκλόω: from κύκλος:

Translations

 * Albanian:
 * Arabic:
 * Armenian:
 * Breton:
 * Bulgarian:
 * Chinese:
 * Mandarin: 氣旋, 气旋, 龍捲風, 龙卷风
 * Czech:
 * Danish:
 * Dutch: ,
 * Esperanto:
 * Estonian: tsüklon
 * Finnish:
 * French:
 * German: ,
 * Greek:
 * Ancient:
 * Modern:


 * Hebrew:
 * Hungarian:
 * Interlingua: cyclon
 * Italian:
 * Japanese: サイクロン
 * Latin: cyclonas
 * Portuguese:
 * Romanian:
 * Russian:
 * Slovene:
 * Spanish:
 * Swahili:
 * Swedish:
 * Telugu: తుఫాను (tuphaanu), గాలివాన (gaalivaana)
 * Turkish: siklon


 * Finnish:
 * Greek:


 * Swedish:

Etymology
From κυκλῶν:, present active participle of κυκλόω: from κύκλος:

Noun

 * 1) cyclone (rotating system of winds)