English

Definition of ratiocination noun from the Oxford Advanced Learner's Dictionary

 

ratiocination

 noun
noun
BrE BrE//ˌrætiˌɒsɪˈneɪʃn//
 
; NAmE NAmE//ˌreɪʃioʊsɪˈneɪʃn//
 
[uncountable] (formal)
 
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the process of thinking or arguing about something in a logical way Word Origin mid 17th cent.: from Latin ratiocinat- ‘deliberated, calculated’, from the verb ratiocinari, from ratio (see ratio).
See the Oxford Advanced American Dictionary entry: ratiocination