permeance noun. ['pǝ:mɪǝns] M19.
[formed as PERMEANT + -ANCE.]
1. Something that permeates. M19.

2. The fact of permeating. M19.

3. Physics. (A measure of) the property of a magnetic circuit of allowing the passage of magnetic flux lines, equal to the ratio of the total flux produced to the magnetomotive force producing it (i.e. the reciprocal of the reluctance). L19.

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