Real-number meaning

rē'əl, rēl
The definition of a real number is any positive or negative number on the number line.

An example of a real number is 1/2, 0, 1, 2, 3, 4, 5, etc.

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A number that is either rational or the limit of a sequence of rational numbers.
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Any rational or irrational number not having an imaginary part.
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A number that can be written as a terminating or nonterminating decimal; a rational or irrational number. The numbers 2, −12.5,3 /7 , and pi (π) are all real numbers.
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(mathematics) The limit of a convergent sequence of rational numbers, whether the limit is a rational number such as 2, -5, or 2/7 or whether the limit is an irrational number such as the square root of two or the length of the circle whose radius is one.

Every integer is a real number, but not vice versa.

A real number can be regarded abstractly as an equivalence class of Cauchy sequences of real numbers.WP.

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(computing) A floating-point number.

Even if you pass sqrt an integer, it returns a real number.

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Rational number.
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Irrational number.
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