permittivity

American  

[pur-mi-tiv-i-tee] / ˌpɜr mɪˈtɪv ɪ ti /

noun

plural

permittivities

1. Electricity. 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.

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permittivity British  

/ ˌpɜːmɪˈtɪvɪtɪ /

noun

1.  ε.  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 See also relative permittivity electric constant

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permittivity Scientific  

/ pûr′mĭ-tĭv′ĭ-tē /

1. A measure of the ability of a material to resist the formation of an electric field within it, equal to the ratio between the electric flux density and the electric field strength generated by an electric charge in the material.

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Etymology

Origin of permittivity

First recorded in 1885–90; permit ¹ + -ive + -ity

Example Sentences

This meant the researchers could reduce the required voltage, because the much higher permittivity of the ferroelectric material allows large forces despite low voltage.

From Science Daily • Jan. 30, 2024

Research has shown that it is possible to understand a cancer type and its drug resistance status from cellular permittivity and conductivity data.

From Science Daily • Dec. 11, 2023

However, it is currently deprecated by standards organizations because this term was used for both relative and absolute permittivity, creating unfortunate and unnecessary ambiguity.

From Textbooks • Aug. 12, 2015

The constant ε0 is the permittivity of free space; its numerical value in SI units is ε0 = 8.85×10 – 12 F/m .

From Textbooks • Aug. 12, 2015

In 2008, Pendry and others demonstrated the beginnings of a cloak for static magnetic fields, the simplicity of which resided in the need to vary only the cloak's magnetic permeability, and not its electric permittivity.

From Scientific American • Mar. 22, 2012