Other Word Forms of Rational
Origin of Rational
From Old French rational, from Medieval Latin rationale (“a pontifical stole, a pallium, an ornament worn over the chasuble"), neuter of Latin rationalis (“rational"), for which see the first etymology.
Middle English racional from Old French racionel from Latin ratiōnālis from ratiō ratiōn- reason reason
From American Heritage Dictionary of the English Language, 5th Edition
Find Similar Words
Find similar words to rational using the buttons below.