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hexadecimal.

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.

11 characters5 syllables approx.English language

Meaning & usage

noun/ˌhɛksəˈdɛsɪməl/
  1. 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.

    uncountable
  2. A number expressed in the hexadecimal system.

    countable
Where this word comes from

1952, from hexa- + decimal; see the Wikipedia article for more information. Piecewise doublet of sexadecimal.

adj/ˌhɛksəˈdɛsɪməl/
  1. Of a number, expressed in hexadecimal.

    not-comparable
Where this word comes from

1952, from hexa- + decimal; see the Wikipedia article for more information. Piecewise doublet of sexadecimal.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.