- capable of being expressed exactly by a ratio of two integers.
- (of a function) capable of being expressed exactly by a ratio of two polynomials.
Origin of rational
Synonyms for rational
Antonyms for rational
Examples from the Web for hyper-rational
Historical Examples of hyper-rational
Slowly, slowly, unnaturally—as though energized by some hyper-rational power—his lips and tongue moved.There is a Reaper ...
Charles V. De Vet
Word Origin for rational
late 14c., "pertaining to reason;" mid-15c., "endowed with reason," from Old French racionel and directly from Latin rationalis "of or belonging to reason, reasonable," from ratio (genitive rationis) "reckoning, calculation, reason" (see ratio).