real numberre·al number
Three is a real number.
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.
Math. any rational or irrational number not having an imaginary part
A number that is either rational or the limit of a sequence of rational numbers.
(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 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
- (computing) A floating-point number.
- Even if you pass sqrt an integer, it returns a real number.
- rational number
- irrational number