from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A measure of the ability of a magnetic circuit to conduct magnetic flux; the reciprocal of reluctance.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A measure of the degree to which a material allows a fluid to permeate it.
- n. The reciprocal of reluctance in a magnetic circuit; the analogue of conductance in an electrical circuit.
from the GNU version of the Collaborative International Dictionary of English
- n. Permeation
from The Century Dictionary and Cyclopedia
- n. The act or fact of permeating; permeation.
- n. In physical, the reciprocal of the reluctance of a magnetic circuit; magnetic conductance.
From Latin permeāre, to penetrate; see permeate.(American Heritage® Dictionary of the English Language, Fourth Edition)
From stem of Latin permere ("to penetrate") + -ance (Wiktionary)