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pressure gradient

noun, Meteorology
the change in atmospheric pressure per unit of horizontal distance in the direction in which pressure changes most rapidly.
Also called barometric gradient.
1915-20 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for pressure gradient
  • As the low approached, its pressure gradient grew ominously steeper.
  • The larger the temperature difference, the tighter the pressure gradient and the stronger the wind speed.
  • The horizontal differential creates a pressure gradient which drives advection.
British Dictionary definitions for pressure gradient

pressure gradient

the change of pressure per unit distance See adverse pressure gradient, favourable pressure gradient
(meteorol) the decrease in atmospheric pressure per unit of horizontal distance, shown on a synoptic chart by the spacing of the isobars
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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