reckoner

noun
reck·​on·​er | \ -k(ə)nə(r) \
plural -s

Definition of reckoner

1 : one that reckons
2 : an aid to reckoning especially : a book of tables

called also ready reckoner

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History and Etymology for reckoner

Middle English rikenere, from rikenen to reckon + -ere -er

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Cite this Entry

“Reckoner.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/reckoner. Accessed 30 Oct. 2020.

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