The story
- Ancient Greekχᾰ́λῐξ (khắlĭx)bor.?
- Latincalx
- Latincalculus
- Latincalculō
- English todaycalculate
Borrowed from Latin calculātus, perfect passive participle of calculō (“to reckon, compute, calculate”, originally by means of pebbles) (see -ate (verb-forming suffix)), from calculus (“a pebble”), further from calx (“limestone”, calc- in compounds) + -ulus (forms diminutives).
Etymology from Wiktionary, CC BY-SA 4.0.