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[far-uh d, -ad] /ˈfær əd, -æd/
noun, Electricity.
1.
the standard unit of capacitance in the International System of Units (SI), formally defined to be the capacitance of a capacitor between the plates of which there appears a potential difference of one volt when it is charged by a quantity of electricity equal to one coulomb. Symbol: F.
1860-1865
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for farad
Historical Examples
• farad, the practical unit of capacity for electricity, in the electromagnetic system of units.

Various

Edited by Rev. James Wood

Nehemiah Hawkins
• The capacity of a condenser which would contain a charge of one coulomb under one volt pressure is the farad.

Nehemiah Hawkins
• Since the farad is far too large for practical purposes a millionth of a farad, or microfarad, whose symbol is mfd., is used.

A. Frederick Collins
• As this unit is inconveniently large, for practical applications the unit microfarad—millionth of a farad—is employed.

Kempster Miller
• The condensers used in the above experiment have a capacity of one microfarad, or one millionth of a farad.

Willis Eugene Tower
• The practical unit of capacity is called the micro-farad, the real unit is the farad, and takes its name from faraday.

Elisha Gray

/ˈfærəd; -æd/
noun
1.
(physics) the derived SI unit of electric capacitance; the capacitance of a capacitor between the plates of which a potential of 1 volt is created by a charge of 1 coulomb F
Word Origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for farad
n.

unit of electric capacity, suggested 1861, first used 1868, named for English physicist Michael Faraday (1791-1867). Related: Faradic.

Online Etymology Dictionary, © 2010 Douglas Harper
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n.
The unit of capacitance in the meter-kilogram-second system equal to the capacitance of a capacitor having a charge of 1 coulomb when a potential difference of 1 volt is applied.

The American Heritage® Stedman's Medical Dictionary
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 farad   (fār'əd)    The SI derived unit used to measure electric capacitance. A capacitor in which a stored charge of one coulomb provides an electric potential difference of one volt across its plates has a capacitance of one farad.
The American Heritage® Science Dictionary
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