comptometer

A mechanical or electromechanical calculator; an adding machine without a crank, driven instead by keypress.

Noun

  1. A mechanical or electromechanical calculator; an adding machine without a crank, driven instead by keypress.
    • Another was able to add up correctly the most complicated lists of figures in less time than a comptometer. - 1956, Anthony Burgess, Time for a Tiger (The Malayan Trilogy), published 1972, page 56:

Origin

Genericized trademark of Felt and Tarrant Manufacturing Company, apparently a blend of compute and meter (“measure”).

Forms

comptometers

Derived

comptometrist