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mesocyclone

[ mez-uh-sahy-klohn, mes-, mee-zuh-, -suh- ]

noun

, Meteorology.
  1. a small cyclone that arises near a thunderstorm and is sometimes associated with the occurrence of tornadoes.


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Word History and Origins

Origin of mesocyclone1

First recorded in 1970–75; meso- + cyclone
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Example Sentences

Precipitation in the storm cloud pushes the mesocyclone down, and as parts of it are pressurized and exposed to different temperatures, a funnel is created.

The mighty mesocyclone that was responsible for both tornadoes was embedded within a line of storms that passed the region.

These factors fuel an engine of rising and rotating air called a mesocyclone, which powers a supercell.

In these potentially tornado-spawning storms, the mesocyclone begins to extend toward the ground, narrowing as it does.

These uncommon tornadoes form from a single supercell storm—a storm with a rotating updraft called a mesocyclone—that can persist for hours.

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