farad

noun

far·​ad ˈfer-ˌad How to pronounce farad (audio)
-əd;
ˈfa-ˌrad, 
-ˌrəd
: the unit of capacitance equal to the capacitance of a capacitor between whose plates there appears a potential of one volt when it is charged by one coulomb of electricity

Examples of farad in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
These [Units of electric charge] are FARADAYS, which are often confused with farads, or units of electrical capacitance (a measure of how well something holds electric charge). — Sean McGowan, New York Times, 8 Oct. 2026

Word History

Etymology

Michael Faraday

First Known Use

1873, in the meaning defined above

Time Traveler
The first known use of farad was in 1873

Browse Nearby Words

Cite this Entry

“Farad.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/farad. Accessed 9 Oct. 2026.

Medical Definition

: the unit of capacitance equal to the capacitance of a capacitor between whose plates there appears a potential of one volt when it is charged by one coulomb of electricity
—abbreviation f

More from Merriam-Webster on farad

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!