- Permeance is the allowance of movement of energy or matter through something.
An example of permeance is the amount of water vapor which can be diffused through a piece of plywood.
permeance definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
- a permeating or being permeated
- the reciprocal of magnetic reluctance
permeance definition by American Heritage Dictionary
A measure of the ability of a magnetic circuit to conduct magnetic flux; the reciprocal of reluctance.
Origin: From Latin permeāre, to penetrate; see permeate.