backflow
American Heritage Dictionary:
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back·flow
(băk'flō') 
n.
A flow of fluid in the opposite direction of its regular flow.
n.
A flow of fluid in the opposite direction of its regular flow.
1. The flow of water or other liquids, mixtures, or substances into the distributing pipes of a potable supply of water from any other than its intended source. Also see back siphonage
2. Any flow in a direction opposite to the natural or intended direction of flow.
Saunders Veterinary Dictionary:
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backflow
Abnormal backward flow of fluids; regurgitation. See also reflux.
- pyelovenous b. — drainage from the renal pelvis into the venous system occurring under certain conditions of back pressure.
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American Heritage Dictionary
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
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McGraw-Hill Dictionary of Architecture & Construction
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc. All rights reserved.
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