rationalis

Latin

Etymology

ratiō +‎ -ālis

Pronunciation

• (Classical Latin) IPA^(key): /ra.ti.oːˈnaː.lis/, [rät̪ioːˈnäːlʲɪs̠]
• (modern Italianate Ecclesiastical) IPA^(key): /rat.t͡si.oˈna.lis/, [rät̪ː͡s̪ioˈnäːlis]

Adjective

ratiōnālis (neuter ratiōnāle, adverb ratiōnāliter); third-declension two-termination adjective

1. (relational) accounts
2. rational, reasonable, of or possessing reason
3. that has a ratio
4. syllogistic

Declension

Third-declension two-termination adjective.

Number	Singular			Plural
Case / Gender	Masc./Fem.	Neuter		Masc./Fem.	Neuter
Nominative	ratiōnālis	ratiōnāle		ratiōnālēs	ratiōnālia
Genitive	ratiōnālis			ratiōnālium
Dative	ratiōnālī			ratiōnālibus
Accusative	ratiōnālem	ratiōnāle		ratiōnālēs ratiōnālīs	ratiōnālia
Ablative	ratiōnālī			ratiōnālibus
Vocative	ratiōnālis	ratiōnāle		ratiōnālēs	ratiōnālia

Derived terms

• irratiōnālis

Descendants

• Catalan: racional
• English: rational, rationale
• French: rationnel
• Italian: razionale
• Portuguese: racional
• Romanian: rațional
• Spanish: racional

References

• “rationalis”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• rationalis in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• rationalis in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.