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electrostatic unit

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noun Electricity.
  1. a unit, as a statampere, in the system of electric units derived from the force of repulsion between two static charges. Abbreviation: esu, ESU
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Origin of electrostatic unit

First recorded in 1855–60
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for electrostatic unit

electrostatic unit

noun
  1. any unit that belongs to a system of electrical cgs units in which the electric constant is given the value of unity and is taken as a pure numberAbbreviation: ESU, e.s.u. Compare electromagnetic unit
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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