1.

a number that cannot be exactly expressed as a ratio of two integers.

Origin of irrational number

1545-1555

British Dictionary definitions for irrational number

noun

1.

any real number that cannot be expressed as the ratio of two integers, such as π

irrational number in Science

irrational number in Culture

A number that cannot be expressed as the ratio of two whole numbers.

: The square roots of most whole numbers are irrational numbers.Note

irrational number in Technology

mathematics

A real number which is not a rational number, i.e. it is not the ratio of two integers.

The decimal expansion of an irrational is infinite but does not end in an infinite repeating sequence of digits.

Examples of irrational numbers are pi, e and the square root of two.

(1995-04-12)

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