mesocyclone
noun Date: 1963 a rapidly rotating air mass within a thunderstorm that often gives rise to a tornado

New Collegiate Dictionary. 2001.

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  • Mesocyclone — Mésocyclone Structure d un orage supercellaire avec les mouvements de l air par les flèches noires, incluant la circulation de mésocyclone en rouge Un mésocyclone est une zone de rotation plus ou moins verticale dans un orage. Cette circulation a …   Wikipédia en Français

  • Mesocyclone — A mesocyclone from the Greensburg, Kansas tornado event indicated on Doppler weather radar. A mesocyclone is a vortex of air, approximately 2 to 10 miles in diameter (the mesoscale of meteorology), within a convective storm …   Wikipedia

  • Mésocyclone — Structure d un orage supercellaire avec les mouvements de l air par les flèches noires, incluant la circulation de mésocyclone en rouge Un mésocyclone est une zone de rotation plus ou moins verticale dans un orage. Cette circulation a un diamètre …   Wikipédia en Français

  • mesocyclone — The cyclonic, rotating part of a large thunderstorm. Tornadoes usually are formed in association with the mesocyclone …   Aviation dictionary

  • mesocyclone — /mez euh suy klohn, mes , mee zeuh , seuh /, n. Meteorol. a small cyclone that arises near a thunderstorm and is sometimes associated with the occurrence of tornadoes. [1970 75; MESO + CYCLONE] * * * …   Universalium

  • mesocyclone — noun an area of vertical atmospheric rotation in supercell thunderstorms, which signals the threat of a possible tornado …   Wiktionary

  • mesocyclone — meso·cyclone …   English syllables

  • mesocyclone — ˌ noun Etymology: mes + cyclone : a rapidly rotating air mass within a thunderstorm that often gives rise to a tornado …   Useful english dictionary

  • Tornado — This article is about the weather phenomenon. For other uses, see Tornado (disambiguation). For the current tornado season, see Tornadoes of 2011 …   Wikipedia

  • tornado — tornadic /tawr nad ik, nay dik/, adj. tornadolike, adj. /tawr nay doh/, n., pl. tornadoes, tornados. 1. a localized, violently destructive windstorm occurring over land, esp. in the Middle West, and characterized by a long, funnel shaped cloud… …   Universalium

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