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English definition of “prefix”


noun [C] uk   /ˈpriː.fɪks/ us  

prefix noun [C] (GRAMMAR)

B2 language a letter or group of letters added to the beginning of a word to make a new word: In the word 'unimportant', 'un-' is a prefix.
See also
Morphology and parts of words

prefix noun [C] (PHONE)

UK internet & telecoms a dialling codeCommunicating by telephone
(Definition of prefix from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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