noun \ˌpər-ˌmi-ˈti-və-tē, -mə-\

Definition of PERMITTIVITY

:  the ability of a material to store electrical potential energy under the influence of an electric field measured by the ratio of the capacitance of a capacitor with the material as dielectric to its capacitance with vacuum as dielectric —called also dielectric constant


1permit + -ivity (as in selectivity)
First Known Use: 1887


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