ratiocination
noun/ˌrætiˌɒsɪˈneɪʃn/
/ˌreɪʃiˌəʊsɪˈneɪʃn/
[uncountable] (formal)- the process of thinking or arguing about something in a logical wayTopics Opinion and argumentc2Word Originmid 17th cent.: from Latin ratiocinat- ‘deliberated, calculated’, from the verb ratiocinari, from ratio (see ratio).
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ratiocination