Definition of hexadecimal noun from the Oxford Advanced Learner's Dictionary

 

hexadecimal

 noun
noun
BrE BrE//ˌheksəˈdesɪml//
 
; NAmE NAmE//ˌheksəˈdesɪml//
 
(also hex
BrE BrE//heks//
 
; NAmE NAmE//heks//
 
)
(computing)
 
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a system for representing pieces of data using the numbers 0–9 and the letters A–F The number 107 is represented in hexadecimal as 6B.
See the Oxford Advanced American Dictionary entry: hexadecimal