A prefix is an affix which is placed before the stem of a word. Adding it to the beginning of one word changes it into another word. For example, when the prefix un- is added to the word happy, it creates the word unhappy. Particularly in the study of languages, a prefix is also called a preformative, because it alters the form of the words to which it is affixed.
Prefixes, like other affixes, can be either inflectional, creating a new form of the word with the same basic meaning and same lexical category (but playing a different role in the sentence), or derivational, creating a new word with a new semantic meaning and sometimes also a different lexical category. Prefixes, like all other affixes, are usually bound morphemes.In English, there are no inflectional prefixes; English uses suffixes instead for that purpose.
The word prefix is itself made up of the stem fix (meaning "attach", in this case), and the prefix pre- (meaning "before"), both of which are derived from Latin roots.
A string of characters used for both prefix and suffix.
Something placed before another
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.
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"
A title added to a person's name, such as Mr. or Dr.
To determine beforehand; to set in advance. from 15thc.
To put or fix before, or at the beginning of something; to place at the start. from 16thc.
To put or fix before, or at the beginning of, another thing; as, to prefix a syllable to a word, or a condition to an agreement.
To set or appoint beforehand; to settle or establish antecedently.
That which is prefixed; esp., one or more letters or syllables combined or united with the beginning of a word to modify its signification; as, pre- in prefix, con- in conjure.
an affix that added in front of the word
attach a prefix to;