plural of permittance

(physics) A property of a dielectric medium that determines the forces that electric charges placed in the medium exert on each other.

plural of permittivity

One who permits.

plural of permitter

The act of permitting; allowance; permission; leave. / (electricity) The power of a dielectric to permit or enhance induction.

permitted; permissible; allowable

for a substance, the ratio between its permittivity and the permittivity of vacuum