Dictionary

ratiocinate

verb ra·ti·o·ci·nate \ˌra-tē-ˈō-sə-ˌnāt, ˌra-shē-, -ˈä-\
ra·ti·o·ci·nat·edra·ti·o·ci·nat·ing

Definition of RATIOCINATE

intransitive verb
:  reason
ra·ti·o·ci·na·tor \-ˌā-tər\ noun

Origin of RATIOCINATE

Latin ratiocinatus, past participle of ratiocinari to reckon, from ratio + -cinari (as in vaticinari to prophesy) — more at vaticinate
First Known Use: 1643

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