absolute value

American  

[ab-suh-loot val-yoo] / ˈæb səˌlut ˈvæl yu /

noun

Mathematics.

1. Also called numerical value.  the magnitude of a quantity, irrespective of sign; the distance of a quantity from zero. The absolute value of a number is symbolized by two vertical lines, as |3| or |−3| is equal to 3.

2. the square root of the sum of the squares of the real and imaginary parts of a given complex number, as |a + b i | is equal to .

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absolute value British  

noun

1. the positive real number equal to a given real but disregarding its sign. Written | x |. Where r is positive, | r | = r = | – r |

2. Also called: modulus.  a measure of the magnitude of a complex number, represented by the length of a line in the Argand diagram: | x + i y | = √( x ² + y ²), so | 4 + 3i | = 5

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absolute value Scientific  

1. The value of a number without regard to its sign. For example, the absolute value of +3 (written ‖+3‖) and the absolute value of −3 (written ‖−3‖) are both 3.

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Etymology

Origin of absolute value

First recorded in 1905–10

Example Sentences

In terms of absolute value, though, this was $308 billion and 29.7% less.

From MarketWatch • Apr. 28, 2026

How does the graph of the absolute value function compare to the graph of the quadratic function, in terms of increasing and decreasing intervals?

From Textbooks • Sep. 23, 2020

We use the absolute value symbol to indicate that the length is a positive number because the absolute value of any number is positive.

From Textbooks • Sep. 23, 2020

The absolute value of a residual measures the vertical distance between the actual value of y and the estimated value of y that appears on the best-fit line.

From Textbooks • Nov. 29, 2017

“Oh, really? Well, if x is greater than or equal to zero, then x to the fourth power minus six times x squared plus nine equals the absolute value of x squared minus three.”

From "The Smartest Kid in the Universe" by Chris Grabenstein