ra·ti·oc·i·na·tion

[rash-ee-os-uh-ney-shuhn, -oh-suh-, rat-ee-]
noun
the process of logical reasoning.

Origin:
1520–30; < Latin ratiōcinātiōn- (stem of ratiōcinātiō), equivalent to ratiōcināt(us) (see ratiocinate) + -iōn- -ion

ra·ti·oc·i·na·tive, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
ratiocinate (ˌrætɪˈɒsɪˌneɪt) [Click for IPA pronunciation guide]
 
vb
(intr) to think or argue logically and methodically; reason
 
[C17: from Latin ratiōcinārī to calculate, from ratiōreason]
 
ratioci'nation
 
n
 
rati'ocinative
 
adj
 
rati'ocinator
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Ratiocination has a plethora of syllables.
So is dichlorodiphenyltrichloroethane. Does it mean:
a white, crystalline, water-insoluble, powerful high explosive, C3H6N6O6, used chiefly in bombs and shells.
a white, crystalline, water-insoluble solid, C14H9Cl5, usually derived from chloral by reaction with chlorobenzene in the presence of fuming sulfuric acid: used as an insecticide and as a scabicide and pediculicide: agricultural use prohibited in the U.S.
Etymonline
Word Origin & History

ratiocination
"process of reasoning," 1530, from L. ratiocincationem (nom. ratiocincatio) "a reasoning," from ratiocincatus, pp. of ratiocinare "to calculate, deliberate," from ratio (see ratio) + -cinari, which probably is related to conari "to try."
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
If bud ratiocination from must firm a substance talk sympathizes.
When you come down to it, there is too little action and too much ratiocination for either movies or the stage.
The reliance of reason vs emotion, individual ratiocination vs historical or social wisdom, may vary.
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