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Related to irrational number: imaginary number
A real number that cannot be expressed as a ratio between two integers.
(Mathematics) any real number that cannot be expressed as the ratio of two integers, such as π
a number that cannot be exactly expressed as a ratio of two integers.
A real number that cannot be expressed as a ratio between two integers. If written in decimal notation, an irrational number would have an infinite number of digits to the right of the decimal point, without repetition. Pi and the square root of 2 (√2) are irrational numbers.
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|Noun||1.||irrational number - a real number that cannot be expressed as a rational number|
transcendental number - an irrational number that is not algebraic
algebraic number - root of an algebraic equation with rational coefficients