Also found in: Encyclopedia, Wikipedia.
Related to permittivity: dielectric constant


n. pl. per·mit·tiv·i·ties
A measure of the ability of a material to interact with an electric field and become polarized by the field, so that the field within the material is weaker than the field in the absence of the material. The permittivity of a material is the product of the dielectric constant of the material and the permittivity of a perfect vacuum, which is defined to be about 8.854 × 10-12 farad per meter.


n, pl -ties
(General Physics) a measure of the response of a substance to an electric field, expressed as the ratio of its electric displacement to the applied field strength; measured in farads per metre. Symbol: ε See also relative permittivity, electric constant


(ˌpɜr mɪˈtɪv ɪ ti)

n., pl. -ties.
the ratio of the flux density produced by an electric field in a given dielectric to the flux density produced by that field in a vacuum.
References in periodicals archive ?
The presence of Sr ions enhances the dielectric permittivity, causing the permittivity maximum to diffuse and shift towards lower temperatures [15].
This property can be achieved by fine tuning the permittivity of the material by optimising quantity and size of the nano filler.
Limited tenders are invited for ac conductivity and permittivity measuring device
Filters can be soldered to a PWB with a recommended permittivity range of three to four or adhered to metal carrier with silver epoxy.
Keywords: microstrip resonator, microwave chemistry, complex permittivity measurement, 3D-FDTD
Dielectric blood coagulometry (DBCM) is a recently developed test that measures changes in the dielectric permittivity of whole blood, representing clumping of red blood cells.
This coating has a two-layer structure, so the permittivity was synthesized from the equivalent circuit.
For any electromagnetic wave travelling inside a fiber, two important parameters to be considered are their permittivity and permeability.
Explicit formulas for permittivity and not local permeability tensors calculation are obtained and the application of these relations to calculate the effective parameters of a dielectric-magnetic 1D periodicity photonic crystal is illustrated.
These phenomena cause a frequency dispersion pattern of permittivity and conductivity which is characterized by a series of steps as the frequency increases [16,17].
ASTM D150, "Standard Test Methods for AC Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Insulation.
Complex permittivity can be measured using a number of techniques, including waveguide, cavity resonator, open resonant cavities, split-post dielectric resonator and free-space techniques.