ready reckoner

名词 n.
中文释义

英文释义

名词 n.
  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 computer program which calculates values; an online calculator.

词形变化

ready reckoners plural ready-reckoner alternative

词源

Coined by English grammarian and textbook writer Daniel Fenning in 1757.
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