Etymology

calculator

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Today it means: A mechanical or electronic device that performs mathematical calculations; (now usually) an electronic one specifically. Full definition →

Middle English calkelatour ← Latin calculātor ← Ancient Greek χᾰ́λῐξ (khắlĭx)bor.?
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The story

  1. Ancient Greekχᾰ́λῐξ (khắlĭx)bor.?
  2. Latincalx
  3. Latincalculus
  4. Latincalculō
  5. Latincalculātor
  6. Middle Englishcalkelatour
  7. English todaycalculator

In the sense of a person, from Middle English calkelatour (“a mathematician, an astrologer”), borrowed from Latin calculātor, equivalent to calculate + -or. The other meanings arose in Modern English.

Etymology from Wiktionary, CC BY-SA 4.0.