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[rash-ee-os-uh-ney-shuh n, -oh-suh-, rat-ee-] /ˌræʃ iˌɒs əˈneɪ ʃən, -ˌoʊ sə-, ˌræt i-/
the process of logical reasoning.
Origin of ratiocination
1520-30; < Latin ratiōcinātiōn- (stem of ratiōcinātiō), equivalent to ratiōcināt(us) (see ratiocinate) + -iōn- -ion
Related forms
ratiocinative, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for ratiocination
Historical Examples
  • At the same time I needn't say that in this affair that we're now in the middle of—there's no question of ratiocination.

    The Title Arnold Bennett
  • Yes, Uncle Reub'; ratiocination is a good word in its place.

  • Instinct is, in a certain sense, a process of ratiocination, though its immediate operations may not be due to reason.

    The Dawn of Reason James Weir
  • So, when the steaks were done, we besought him to lay bare his system of ratiocination.

    Sixes and Sevens O. Henry
  • Cam signalled for a Bellafonte Sunrise to fortify himself for the forthcoming adventure in non-Aristotelian ratiocination.

    Telempathy Vance Simonds
  • To be in love is in a measure to part company with the power of ratiocination.

    Mlle. Fouchette Charles Theodore Murray
  • Rationalization and ratiocination merged in her mind very readily.

    Emma Goldman Charles A. Madison
  • A process of ratiocination never troubled the brain of any of the five.

    The Young Yagers Mayne Reid
  • In our idle hours we always improved our higher selves by ratiocination and mental thought.

  • Here was a process of ratiocination worthy of any autocrat that ever breathed.

Word Origin and History for ratiocination

"process of reasoning," 1520s, from Latin ratiocinationem (nominative ratiocinatio) "a reasoning, calm reasoning," from past participle stem of ratiocinare "to calculate, deliberate," from ratio (see ratio) + -cinari, which probably is related to conari "to try" (see conation).

Most writers make ratiocination synonymous with reasoning. J.S. Mill and others hold that the word is usually limited to necessary reasoning. [Century Dictionary]

Online Etymology Dictionary, © 2010 Douglas Harper
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