reckoner

UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈrɛkənə/US:USA pronunciation: respellingUSA pronunciation: respelling(rek′ə nər)


WordReference Random House Unabridged Dictionary of American English © 2026
reck•on•er  (rek′ə nər),USA pronunciation n. 
  1. a person who reckons.
  2. MathematicsAlso called ready reckoner. a collection of mathematical and other tables for ready calculation.
  • 1175–1225; Middle English; see reckon, -er1

Collins Concise English Dictionary © HarperCollins Publishers::
reckoner / ˈrɛkənə/
  1. any of various devices or tables used to facilitate reckoning, esp a ready reckoner
'reckoner' also found in these entries (note: many are not synonyms or translations):
ready reckoner

Forum discussions with the word(s) "reckoner" in the title:


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