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rational

 [rash´un-al]
based upon reason; characterized by possession of one's reason.

ra·tion·al

(rash'un),
1. Pertaining to reasoning or to the higher thought processes; based on objective or scientific knowledge, in contrast to empiric (1).
2. Influenced by reasoning rather than by emotion.
3. Having the reasoning faculties; not delirious or comatose.
[L. rationalis, fr. ratio, reason]

rational

/ra·tion·al/ (ră´shun-al) based upon reason; characterized by possession of one's reason.

rational

(răsh′ə-nəl)
adj.
1. Having or exercising the ability to reason.
2. Consistent with or based on reason or good judgment; logical or sensible: rational decisions.

ra′tion·al·ly adv.
ra′tion·al·ness n.

rational

[rash′ənəl]
Etymology: L, rationalis, reasonable
1 pertaining to a measure, method, or procedure based on reason.
2 pertaining to a therapeutic method based on an understanding of the cause and mechanisms of a specific disease and the potential effects of the drugs or procedures used in treating the disorder.
3 sane; capable of normal reasoning or behavior.

ra·tion·al

(rash'ŭn-ăl)
1. Pertaining to reasoning or to the higher thought processes; based on objective or scientific knowledge, in contrast to empiric (1).
2. Influenced by reasoning rather than by emotion.
3. Having the reasoning faculties; not delirious or comatose.
[L. rationalis, fr. ratio, reason]

rational

based upon reason.

rational deductive diagnosis
a diagnosis based on rationalization of the signs with pathological and epidemiological principles, as distinct from empirical diagnosis.
References in periodicals archive ?
Rationally satisfied customers, on the other hand, behave no differently than customers who are dissatisfied.
It may indeed prove to be far the most difficult and not the least important task for human reason rationally to comprehend its own limitations.
Most philosophers nowadays believe that the right type of response to the Lottery Paradox is to deny that one can know, or rationally believe, that one's ticket is a loser, and to do so in a way that is compatible with our conviction that we have a fair amount of empirical knowledge as well as many rational beliefs about matters of empirical fact.
In his own words, written in 1994: "So at the present time, I seem to be thinking rationally again in the style that is characteristic of scientists.
The Company's disease-based technology platform integrates expertise in protein biology with computational and medicinal chemistry to identify novel targets and rationally design small molecule compounds for large markets with unmet medical needs.
Occasionally, even when presented with the best variables, it can still get it badly wrong and award intellect to those least able to employ it rationally.
Excerpt from Money and Power: "In a market-oriented society, people can drive up the price of any commodity--from tulips to Impressionist paintings to IPOs--to levels that cannot be rationally justified.
They thought if they could raise more capital, the markets would start acting rationally, and their losses would be reversed.
It is sometimes claimed that patients who are terminally ill cannot rationally or autonomously choose euthanasia, because they are liable to be depressed, or their minds may be clouded by medication.
Refugee women from the East were, for example, depicted in the print media as potential spies, or shoplifters who should be arrested or at least taught how to become rationally consuming West German women.
Through ethical analysis, physician executives can assist their physician colleagues and fellow administrators to find rationally defensible answers to questions regarding the distribution of limited resources.
7) The court acknowledged that the regulations are stringent but nonetheless found them rationally connected to departmental interests in ".