real number

Noun

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Noun

**real number** (*plural* real numbers)

- (
*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 circumference 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.*^{P-adic_number#Analytic_approach}

- (
*computing*) A floating-point number.*Even if you pass*`sqrt`an integer, it returns a real number.

- French: nombre réel
- German: reelle Zahl
- Italian: numero reale
- Portuguese: número real
- Russian: вещественное число́
- Spanish: número real

This text is extracted from the Wiktionary and it is available under the CC BY-SA 3.0 license | Terms and conditions | Privacy policy 0.004