[mahy-kruh-far-uh d, -ad]

noun Electricity.

a unit of capacitance, equal to one millionth of a farad. Abbreviation: mf., mfd. Symbol: μF, μf

Origin of microfarad

First recorded in 1870–75; micro- + farad
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for microfarad

Historical Examples of microfarad

  • Then we would say that the condenser had a capacity of one microfarad.

  • The farad being inconveniently large for practical use, one-millionth of a farad, called a microfarad, is generally adopted.

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

    The Radio Amateur's Hand Book

    A. Frederick Collins

  • The leak should have a very high resistance, usually one or two million ohms if the condenser is about 0.002 microfarad.

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


    Willis Eugene Tower

British Dictionary definitions for microfarad



one millionth of a farad; 10 –6 faradSymbol: μ F
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

microfarad in Science


[mīkrō-făr′əd, -ăd]

A unit of capacitance equal to one millionth (10-6) of a farad. The microfarad is used for most electronic applications. Its symbol is μF.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.