missummation

English

Etymology

From mis- +‎ summation.

Noun

missummation (plural missummations)

1. (archaic) Wrong summation; incorrect addition.

   Synonym: misaddition

   • 1817 December 31 (indicated as 1818), [Walter Scott], Rob Roy. […], volume (please specify |volume=I to III), Edinburgh: […] James Ballantyne and Co. for Archibald Constable and Co. […]; London: Longman, Hurst, Rees, Orme, and Brown, →OCLC:

     An inroad on the strongbox, or an erasure in the ledger, or a missummation in a fitted account, could hardly have surprised him more disagreeably.

References

• “missummation”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.