ratiocinate

UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ˌrætɪˈɒsɪˌneɪt/

US:USA pronunciation: respellingUSA pronunciation: respelling(rash′ē os′ə nāt′, -ō′sə-, rat′ē-)


Inflections of 'ratiocinate' (v): (⇒ conjugate)
ratiocinates
v 3rd person singular
ratiocinating
v pres p
ratiocinated
v past
ratiocinated
v past p

WordReference Random House Unabridged Dictionary of American English © 2026
ra•ti•oc•i•nate  (rash′ē os′ə nāt′, -ō′sə-, rat′ē-),USA pronunciation v.i., -nat•ed, -nat•ing. 
  1. to reason;
    carry on a process of reasoning.
  • Latin ratiōcinātus past participle of ratiōcinārī to reckon, calculate, conclude, verb, verbal derivative of ratiō reason
  • 1635–45
ra′ti•oc′i•na′tor, n. 

Collins Concise English Dictionary © HarperCollins Publishers::
ratiocinate /ˌrætɪˈɒsɪˌneɪt/ vb
  1. (intransitive) to think or argue logically and methodically; reason
Etymology: 17th Century: from Latin ratiōcinārī to calculate, from ratiō reasonˌratiˌociˈnation n ˌratiˈocinative adj ˌratiˈociˌnator n
'ratiocinate' also found in these entries (note: many are not synonyms or translations):
ratiocination

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