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cyclone    音标拼音: [sɪkl'on]
n. 飓风,暴风

飓风,暴风

cyclone
n 1: (meteorology) rapid inward circulation of air masses about
a low pressure center; circling counterclockwise in the
northern hemisphere and clockwise in the southern [ant:
{anticyclone}]
2: a violent rotating windstorm

Cyclone \Cy"clone\ (s?"kl?n), n. [Gr.????? moving in a circle,
p. pr. of ?????, fr. ky`klos circle.]
1. (Meteor.) A violent storm, often of vast extent,
characterized by high winds rotating about a calm center
of low atmospheric pressure. This center moves onward,
often with a velocity of twenty or thirty miles an hour.
[1913 Webster]

Note: The atmospheric disturbance usually accompanying a
cyclone, marked by an onward moving area of high
pressure, is called an anticyclone.
[1913 Webster]

2. (Meteor.) In general, a condition of the atmosphere
characterized by a central area of pressure much lower
than that of surrounding areas, and a system of winds
blowing inward and around (clockwise in the southern
hemisphere and counter-clockwise in the northern); --
called also a {low-area storm}. It is attended by high
temperature, moist air, abundant precipitation, and
clouded sky. The term includes the hurricane, typhoon, and
tropical storms; it should not be applied to the moderate
disturbances attending ordinary areas of low pressure nor
to tornadoes, waterspouts, or "twisters," in which the
vertical motion is more important than the horizontal.
[Webster 1913 Suppl.]

3. A tornado. See above, and {Tornado}. [Middle U. S.]
[Webster 1913 Suppl.] Cyclone cellar

65 Moby Thesaurus words for "cyclone":
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


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  • Cyclone Ditwah 2025 - World Health Organization (WHO)
    Cyclonic Storm Ditwah made landfall on Sri Lanka’s eastern coast on 28 November 2025, leaving a major humanitarian crisis in its wake More than 1 4 million people have been affected across all 25 districts As of 2 December, authorities have confirmed 410 deaths, with 336 people still reported missing Nearly 233 000 people have been displaced as homes and key infrastructure suffered
  • Tropical Cyclones - World Health Organization (WHO)
    The health impacts of tropical cyclones depend on the number of people living in low-lying coastal areas in the storm’s direct path, the built environment including building design, and whether there is sufficient time for warning and evacuation Tropical cyclones, may directly and indirectly affect health in many ways, for example by: increasing cases of drowning and other physical trauma
  • Start of the cyclone season in the South Pacific: Tips on how to prepare
    The combined impact of increased cyclone intensity, rising sea levels and increased heavy rainfalls can be devastating for PICs, in which most of the population live in coastal areas vulnerable to sea level rise, storm surges and flooding
  • WHO’s work in the acute phase of Cyclone Ditwah: Looking ahead to build . . .
    When Cyclone Ditwah swept across Sri Lanka in late 2025, it left behind a trail of disruption that tested the resilience of communities and the national health system In the hours and days that followed, the World Health Organization (WHO) stepped in to support the Ministry of Health with coordinated action, technical expertise and critical supplies that helped stabilize essential services
  • Cyclone Winston 2016 - World Health Organization (WHO)
    The most powerful cyclone ever recorded in the Southern Hemisphere ravaged Fiji on 20–21 February 2016, leaving 44 dead, nearly 130 injured and 45 hospitalized The cyclone had a significant impact on the health system, damaging health facilities, disrupting health care services, resulting in lost medical supplies, and interrupting telecommunications, road and sea transportation, and water
  • Standing Strong Together: Health System Resilience and Emergency . . .
    In the aftermath of Cyclone Ditwah, Kegalle District faced one of the most severe disasters in recent history, marked by widespread floods and landslides that displaced over 26,000 families and affected more than 90,000 individuals The devastation included significant loss of life, missing persons, injuries, and extensive damage to homes, health facilities, and infrastructure The World
  • Tropical cyclone Gita - World Health Organization (WHO)
    Tropical cyclone Gita In early February 2018, Tropical Cyclone Gita, a Category 4 storm with winds of more than 275 kilometres per hour, ravaged the Pacific As the country most affected by the cyclone, Tonga was the focus of WHO's support From 12 to 13 February, the storm ravaged the main island of Tongatapu and nearby 'Eua
  • Sri Lanka Floods and landslides – Cyclonic storm Ditwah November 2025
    Sri Lanka is experiencing torrential rainfall, severe flooding and landslides as the northeast monsoon intensifies, worsened by the impact of Cyclonic Storm Ditwah which made landfall on the island’s eastern coast early morning on 28 November 2025 Cyclone Ditwah has resulted in a devastating nationwide emergency in Sri Lanka, affecting more than 1 4 million people from over 407,594 families
  • WHO and partners respond to recent tropical storms, typhoons and . . .
    In early September 2024, Typhoon Yagi impacted several countries in the World Health Organization (WHO) Western Pacific Region, leaving a trail of destruction with its intense rainfall and powerful winds, subsequent flooding and landslides In the Philippines, the powerful typhoon was even followed by other typhoons, placing considerable pressure on local communities and the Government’s
  • WHO provides emergency funds to scale up health response in cyclone-hit . . .
    As Sri Lanka faces rapidly worsening conditions triggered by a cyclonic storm, the World Health Organization today provided US$ 175 000 as emergency funds to support essential health services, while continuing to work with national authorities and humanitarian partners to reach life-saving interventions to the millions of affected people across the country





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