## Etymology

First used in 1952. From Greek-based prefix *hexadeca-* (sixteen) + decimal.

## Noun

**hexadecimal** (countable and uncountable, plural **hexadecimals**)

- (arithmetic, computing, uncountable) A number system with base sixteen, using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E and F, most used in computing as a hexadecimal digit can represent four bits, half a standard byte, and thus a single byte can be represented conveniently with two digits.
- (computing) A number expressed in the hexadecimal system.

## Adjective

**hexadecimal** (not comparable)

- Of a number, expressed in hexadecimal.

## Credits

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