calculus
pebble; counting-board pebble; calculation; account
- SOUND
- English borrowed Latin calculus without a mediating vernacular form in the reviewed route; pronunciation and plural behavior were anglicized.
- MEANING
- Latin counting and reckoning specialize into mathematical systems while the bodily-stone sense also survives.
- CHRONOLOGY
- Merriam-Webster reports English use in 1666.
- SCHOLAR
- Merriam-Webster editors
- CONFIDENCE
- established