rational (redirected from rationalness)

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

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ra·tion·al (rsh-nl)

adj.

1. Having or exercising the ability to reason.

2. Influenced by reasoning rather than by emotion.

3. Of sound mind; sane.

4. Based on scientific knowledge or theory rather than practical observation.

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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.

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rational

based upon reason.

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rational deductive diagnosis

a diagnosis based on rationalization of the signs with pathological and epidemiological principles, as distinct from empirical diagnosis.