# absolute value

CEFR B2 · Compound

Source: https://englishreference.com/word/absolute-value
Updated: 2026-08-05

## Definition

the distance of a number from zero, regardless of whether it is positive or negative.

For teachers: the non-negative value of a real number without regard to its sign. In mathematical notation, it is represented by vertical bars enclosing the number or expression.

## Examples

- The absolute value of -5 is 5.
- When calculating the total distance moved, you must use the absolute value of each step so that backward movements don't cancel out forward ones.
- The function is defined such that the output always corresponds to the absolute value of the input, ensuring a non-negative result across the entire domain.

## Usage notes

- used almost exclusively in mathematical, statistical, or technical contexts.
- Teaching tip: anchor the concept by explaining it as 'distance from zero' on a number line, which helps students understand why the result can never be a negative number.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.