FluentPlex

prefix

/ˈpɹiːfɪks/ noun B1
  1. A morpheme added to the beginning of a word to modify its meaning, for example as, pre- in prefix, con- in conjure, re- in reheat, etc.
  2. A set of digits placed before a telephone number, to indicate where the number is based, what type of phone number it is (landline, mobile, toll-free, premium rate etc.) · in the UK, a number with an 0800 prefix is a toll-free number.· Add the prefix +34 to dial a Spanish number from abroad
  3. A title added to a person's name, such as Mr. or Dr.
  4. An initial segment of a string of characters. · The string "abra" is both a prefix and a suffix of the string "abracadabra".

Plural prefixes

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From the library

"It is a small point, Count Sylvius, but perhaps you would kindly give me my prefix when you address me.
The Case-Book of Sherlock Holmes, p. 36 · B2

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Words, meanings, pronunciations and translations from Wiktionary (CC BY-SA 4.0); how common each word is from wordfreq. Made into this dictionary by FluentPlex.