Origin of reckoner
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for reckoner
- any of various devices or tables used to facilitate reckoning, esp a ready reckoner
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
early 13c., agent noun from reckon. Especially "book of tables used in calculation," often known as a ready reckoner.
Online Etymology Dictionary, © 2010 Douglas Harper