• Webster's Revised Unabridged Dictionary
    • n Arithmometer A calculating machine.
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Century Dictionary and Cyclopedia
    • n arithmometer An instrument for performing multiplication and division. The multiplicand is made to appear in one place by setting certain stops or wheels. A handle is then turned, and other motions are made, so as to cause the multiplier to appear in another place. Then the product will be found in a third place. Division and subtraction can be performed in a somewhat similar way. The best-known of these machines is by Thomas of Colmar; the best is by Grant.
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Chambers's Twentieth Century Dictionary
    • n Arithmometer ar-ith-mom′et-ėr an instrument for working out arithmetical calculations.
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Webster's Revised Unabridged Dictionary
Gr. number + -meter,: cf. F. arithmomètre,
Chambers's Twentieth Century Dictionary
Gr. arithmos, number, metron, measure.


In literature:

Machines of far greater powers than the arithmometers mentioned have been invented by Babbage and by Scheutz.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4" by Various