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reckoner

[rek-uh-ner]
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noun
  1. a person who reckons.
  2. Also called ready reckoner. a collection of mathematical and other tables for ready calculation.
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Origin of reckoner

Middle English word dating back to 1175–1225; see origin at reckon, -er1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for reckoner

Historical Examples

  • I'm no reckoner of time, that keeps its own score like an innkeeper, without my help.

    Montezuma's Daughter

    H. Rider Haggard

  • Grandmother was talkative, and she said: 'Go, Nastenka, into my bedroom and bring me my reckoner.'

British Dictionary definitions for reckoner

reckoner

noun
  1. any of various devices or tables used to facilitate reckoning, esp a ready reckoner
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for reckoner

n.

early 13c., agent noun from reckon. Especially "book of tables used in calculation," often known as a ready reckoner.

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Online Etymology Dictionary, © 2010 Douglas Harper