- 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
Examples from the Web for rational
Reactionary movements are, first and foremost, not rational.Rage Against GamerGate’s Hate Machine: What I Got For Speaking Up|Arthur Chu|November 17, 2014|DAILY BEAST
And, as noted with victim blaming, this undermines men as thinking, rational, conscious beings.
We should know by now that a rational argument never can touch an affair of the heart.
Of course, this call for hip-hop artists to speak out comes from a completely sincere and rational place.Not Every Black Celebrity Has to Take a Stand on Ferguson|Amy Zimmerman|August 19, 2014|DAILY BEAST
First, laws that treat people differently from one another without a rational justification are unconstitutional.Justice Kennedy Opened the Door to Same-Sex Marriage, Will He Walk Through Next?|Geoffrey R. Stone|August 3, 2014|DAILY BEAST
It was the first rational word since I had begun to dig, and it acted on Cumshaw like a douche of cold water.The Lost Valley|J. M. Walsh
The rational being is impelled towards absolute independence, and strives after freedom for the sake of freedom.A History of Philosophy in Epitome|Albert Schwegler
But this does not authorize the rational psychologist to affirm, from mere conceptions, its permanence beyond life.The Critique of Pure Reason|Immanuel Kant
It is just possible that these propositions are true; if so, a rational man will have no quarrel with them.Free Thought and Official Propaganda|Bertrand Russell
Do we not mean that the thing appears to us irrational, and we want it shown that it is rational?A Critical History of Greek Philosophy|W. T. Stace
British Dictionary definitions for rational
Word Origin for rational
Word Origin and History 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).