Comptometer

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 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."

Synonyms

All synonyms
adding machinecalculator

Example

More examples

"Another was able to add up correctly the most complicated lists of figures in less time than a comptometer."

Etymology

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

Related phrases

adding machine

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.