Liberal Dictionary English Dictionary
noun, plural ra·tion·al·i·ties.
- the state or quality of being rational.
- the possession of reason.
- agreeableness to reason; reasonableness.
- the exercise of reason.
- a reasonable view, practice, etc.
noun plural -ties
- the state or quality of being rational or logical
- the possession or utilization of reason or logic
- a reasonable or logical opinion
- economics the assumption that an individual will compare all possible combinations of goods and their prices when making purchases
1620s, “quality of having reason;” 1650s, “fact of being agreeable to reason,” from French rationalité, from Late Latin rationalitas “reasonableness, rationality” (also source of Spanish racionalidad, Italian razionalita), from Latin rationalis (see rational).