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Ready reckoner
noun
Definitions
Noun
- 1 A printed book or table containing precalculated values, often multiples of given amounts. historical
"Nor did he trouble his borrowers with abstract calculations of figures, or references to ready-reckoners; his simple rule of interest being all comprised in the one golden sentence, ‘two-pence for every half-penny,’ which greatly simplified the accounts[…]"
- 2 a handbook of tables used to facilitate computation wordnet
- 3 A computer program which calculates values; an online calculator.
Etymology
Coined by English grammarian and textbook writer Daniel Fenning in 1757.
See also for "ready reckoner"
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