[ adjective ] consistent with or based on or using reason
"rational behavior" "a process of rational inference" "rational thought"
Used in print(Jaroslav Pelikan, The Shape of Death: life, death and...)
Thus the image of God is that which makes a man a man and not an oyster ; the similitude of God , by contrast , is that which makes a man a child of God and not merely a rational creature .(J. H. Hexter, "Thomas More: On the Margins...)
It also overlooks the fact that in a rational lexicon , and quite clearly in More 's lexicon , the opposite of serious is not gay but frivolous , and the opposite of gay is not serious but solemn .
[ adjective ] of or associated with or requiring the use of the mind
"intellectual problems" "the triumph of the rational over the animal side of man"
Used in print(John F. Hayward, "Mimesis and Symbol in the Arts"...)
Later abstractive and rational processes may indicate errors of judgment in these apprehensions of value , but the apprehensions themselves are the primary stuff of experience .
[ adjective ] having its source in or being guided by the intellect (distinguished from experience or emotion)
"a rational analysis"