Look up rational in Wiktionary, the free dictionary.

Rational may refer to:

• Rationality, a concept of reason
• Rational number, a number that can be expressed as a ratio of two integers
• Rational function, a mathematical function which can be written as the ratio of two polynomial functions
• Rational Software, formerly Rational Software Corporation, a software company now owned by IBM
• a central paradigm of Rational Emotive Behavior Therapy
• one of the four temperaments according to the Keirsey Temperament Sorter
• Rational choice theory, a theoretical paradigm in microeconomics
• Rational AG, a German manufacturer of food processors

[edit] See also

• Rationalism (disambiguation)
• Rationale, a liturgical vestment worn by clergy

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