Middle English calkelatour loses unstressed material and stabilizes with the learned agent ending -or as calculator.
CANONICAL RELATIONSHIP RECORD
COVERAGE LEDGER ↗EDGE / 0396inheritanceestablished
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calculator
one who calculates; later especially a calculating machine or electronic device
OPEN NODE 429 ↗DESCENDS FROM→
PARENT / EARLIER FORM / attestedMiddle English · Middle English, 14th–15th centuries · human reckonercalkelatour
one who counts or computes; a mathematician
OPEN NODE 430 ↗01
THE COMPLETE RELATIONSHIP
EVERY FIELD, NOT A FAIRY TALE
The human reckoner sense survives while the agent label later transfers to mechanical and electronic calculating devices.
The word is reported from the 14th century; the source does not assign one first date to the machine sense.
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established — no additional confidence note is attached.
reviewed
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CITATION REGISTER
SOURCES ON THIS EDGE
Calculator — Definition, Word History, and First Known UseWord History: Middle English calkelatour; definitions
supportsAUDIT SOURCE ↗ORIGINAL ↗Documents the medieval human-reckoner form and the modern person and device senses.
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EDITORIAL REUSE