# permittivity

[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.
Also called dielectric constant, relative permittivity, specific inductive capacity.
Origin of permittivity
1885-1890
1885-90; permit1 + -ive + -ity
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for dielectric constant
Historical Examples
• From Walden's work it appears that the dielectric constant finally determines the quantitative ionizing effect of a solvent.

• You see, the dielectric constant of this material isn't constant at all.

Poul William Anderson
• Numerically the specific inductive capacity of a dielectric is equal to the dielectric constant already mentioned.

Various
• The coefficient K is called the dielectric constant of the medium, and its value is taken as unity for air.

Various
• The value of the dielectric constant is greatly affected by the temperature and the frequency of the applied electric force.

• For constant charges and distances the mechanical force is inversely as the dielectric constant.

British Dictionary definitions for dielectric constant

## dielectric constant

noun
1.
another name for relative permittivity

## permittivity

/ˌpɜːmɪˈtɪvɪtɪ/
noun (pl) -ties
1.
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 ε See also relative permittivity, electric constant
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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dielectric constant in Science
 permittivity   (pûr'mĭ-tĭv'ĭ-tē)    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.
The American Heritage® Science Dictionary
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### Difficulty index for permittivity

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### Word Value for dielectric

0
18
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