a primary electric cell, as the Weston cell, that produces an accurately known constant voltage: used in scientific measurements.
Origin of standard cell
First recorded in 1870–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a voltaic cell producing a constant and accurately known electromotive force that can be used to calibrate voltage-measuring instruments
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