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addaword.gifdefinition of polar vortex

noun
a persistent, large-scale cyclone (=a circular storm) that circles the north and south poles. If it moves from its normal position it can cause significant cooling of the weather in densely populated areas.
North America’s polar vortex-filled winter was almost certainly overhyped.
Submitted from United Kingdom on 15/07/2014 15:16:00
Definition of polar vortex from the Open Dictionary – a public resource hosted by Macmillan English Dictionary Online

pre-cation

a paid holiday given to a new employee before they start their job

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