Capable of reasoning.
Healthy or balanced intellectually; exhibiting reasonableness.
Logically sound; not self-contradictory or otherwise absurd.
Of an algebraic expression, capable of being expressed as the ratio of two polynomials.
Expressing the type, structure, relations, and reactions of a compound; graphic; said of formulae.
Of a number, capable of being expressed as the ratio of two integers.
Expressing a physical object.
A rational number: a number that can be expressed as the quotient of two integers.
The breastplate worn by Israelite high priests.
Of an argument, etc.: based on good judgment and solid reasoning.
Of a person: having extensive knowledge of a subject.