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Poiseuille's law

[pwah-zweez] /pwɑˈzwiz/
noun, Physics, Mechanics.
the law that the velocity of a liquid flowing through a capillary is directly proportional to the pressure of the liquid and the fourth power of the radius of the capillary and is inversely proportional to the viscosity of the liquid and the length of the capillary.
Origin of Poiseuille's law
First recorded in 1880-85; See origin at poise2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Poiseuille's law in Medicine

Poiseuille's law Poi·seuille's law (pwä-zɶ'yēz)
The principle that the volume of a homogeneous fluid passing per unit time through a capillary tube is directly proportional to the pressure difference between its ends and to the fourth power of its internal radius, and inversely proportional to its length and to the viscosity of the fluid.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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