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advection

 - 3 dictionary results

ad⋅vec⋅tion

  [ad-vek-shuhn]
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–noun
1. Meteorology. the horizontal transport of atmospheric properties (distinguished from convection ).
2. the horizontal flow of air, water, etc.
Origin:
1905–10; < L advectiōn- (s. of advectiō), equiv. to advect(us), ptp. of advehere (ad- ad- + vec-, var. s. of vehere to carry, bring + -tus ptp. suffix) + -iōn- -ion

Related forms:
ad⋅vec⋅tive, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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ad·vec·tion   (ād-věk'shən)   
n.  

  1. The transfer of a property of the atmosphere, such as heat, cold, or humidity, by the horizontal movement of an air mass: Today's temperatures were higher due to the advection of warm air into the region.

  2. The rate of change of an atmospheric property caused by the horizontal movement of air.

  3. The horizontal movement of water, as in an ocean current.


[Latin advectiō, advectiōn-, act of conveying, from advectus, past participle of advehere, to carry to : ad-, ad- + vehere, to carry; see wegh- in Indo-European roots.]
ad·vec'tive adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia

advection

in atmospheric science, change in a property of a moving mass of air because the mass moves to a region where the property has a different value (e.g., the change in temperature when a warm air mass moves into a cool region). Advection can refer to either the horizontal or vertical components of the motion

Learn more about advection with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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