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adding machine

noun
1.
a machine capable of adding numbers and sometimes capable of performing the other arithmetic functions of subtraction, multiplication, and division: such machines are now obsolescent, having been replaced in most applications by electronic calculators.
Origin
1870-1875
1870-75, Americanism
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for adding-machine

adding machine

noun
1.
a mechanical device, operated manually or electrically, for adding and often subtracting, multiplying, and dividing
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
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9
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