noun (plural -ties) Date: 1628 1. the quality or state of being rational 2. the quality or state of being agreeable to reason ; reasonableness 3. a rational opinion, belief, or practice — usually used in plural

New Collegiate Dictionary. 2001.


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  • rationality — rational ► ADJECTIVE 1) based on or in accordance with reason or logic. 2) able to think sensibly or logically. 3) having the capacity to reason. 4) Mathematics (of a number or quantity) expressible as a ratio of whole numbers. DERIVATIVES… …   English terms dictionary

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