- 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.
- a permeating or being permeated
- the reciprocal of magnetic reluctance
A measure of the ability of a magnetic circuit to conduct magnetic flux; the reciprocal of reluctance.
Origin of permeanceFrom Latin permeāre, to penetrate; see permeate.
(usually uncountable, plural permeances)