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work function

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noun
  1. Physics. the least energy necessary to free an electron from a metal surface.
  2. Thermodynamics. Helmholtz function.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for work function

work function

noun
  1. physics the minimum energy required to transfer an electron from a point within a solid to a point just outside its surfaceSymbol: φ, Φ
  2. thermodynamics another name (not now used because of confusion with sense 1) for Helmholtz function
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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