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primary cell

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noun Electricity.
  1. a cell designed to produce electric current through an electrochemical reaction that is not efficiently reversible, so that the cell when discharged cannot be efficiently recharged by an electric current.
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Origin of primary cell

First recorded in 1900–05
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for primary cell

primary cell

noun
  1. an electric cell that generates an electromotive force by the direct and usually irreversible conversion of chemical energy into electrical energy. It cannot be recharged efficiently by an electric currentAlso called: voltaic cell Compare secondary cell
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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