Etymologically
← History of ratiocinor

ratiocinor Latin · revision 10097

17 Oct 2026, 01:38 by bogdan “New Latin entry (sources: de Vaan, OLD, Lewis & Short, TLL...)” current version

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+ {{infobox|confidence=probable|formation=derivation|attested=Cicero|origins=la ratiō}}
+
+ ==Pronunciation==
+ * IPA (Classical): [ra.tiˈoː.kɪ.nɔr]^(Wiktionary)
+ * IPA (Ecclesiastical): [rat.t͡siˈɔː.t͡ʃi.nor]^(Wiktionary)
+
+ ==Forms==
+ '''ratiōcinor''' (present infinitive ratiōcinārī, perfect active ratiōcinātus sum); first conjugation, deponent^(Wiktionary)
+
+ ==Etymology==
+ It is from [[ratiō]] “reckoning, reason” with the suffix [[m|la|-cinor]], which is generally traced to [[canō]] “to sing, recite”; compare [[vāticinor]] and [[sermōcinor]].^(OLD 2012)^(Wiktionary) De Vaan derives ⟨ratiō⟩ from ⟨ratus⟩, the participle of [[reor]] “to reckon”, [[ine-pro|*Hreh₁-]].^(de Vaan 2008)
+
+ ==Earliest recorded meaning==
+ The OLD's earliest citations are Cicero.^(OLD 2012) Köbler dates Cicero 81–43 BC.^(Köbler 2010)
+
+ ==Semantic evolution==
+ It meant to keep accounts, compute, calculate, as in Cicero's ''dē pecūniā ratiōcinārī'' “to make money calculations”; to reason, consider, deliberate, also in Cicero; and transitively in Vitruvius to calculate, consider something, and Lewis & Short call it rare but in good prose.^(OLD 2012)^(Lewis & Short 1879)^(Gaffiot 2016)
+
+ In Ecclesiastical Latin it means to reckon, compute, calculate.^(Stelten 1995) English ''ratiocinate'' (1640s) is from its participle ''ratiōcinātus''.^(Etymonline)
+
+ ==Timeline==
+ * 81–43 BC – Cicero uses it of computing and reasoning.^(OLD 2012)^(Köbler 2010)
+ * c. 84–c. 25 BC – Vitruvius uses it transitively.^(OLD 2012)^(Köbler 2010)
+ * 1640s – English ''ratiocinate'' is recorded.^(Etymonline)
+
+ ==Meanings==
+ ===Verb===
+ # To keep accounts, [[m|en|compute]], [[m|en|calculate]].^(OLD 2012)^(Lewis & Short 1879)
+ # To [[m|en|reason]], consider.^(OLD 2012)
+
+ ==Word family==
+ * [[ratiōcinātiō]]
+ * [[ratiōcinātīvus]]
+ * [[ratiōcinātor]]
+ * [[ratiōcinium]]
+
+ ==Related words==
+ * [[ratiō]]
+ * [[reor]]
+ * [[en|ratiocination]]
+
+ ==References==
+ {{reflist}}