Prefix vs. Postfix

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.

(telecommunications) 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.)

Example: ‘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.

(computing) An initial segment of a string of characters.

Example: ‘The string "abra" is both a prefix and a suffix of the string "abracadabra".’;

(transitive) To determine beforehand; to set in advance.

(transitive) To put or fix before, or at the beginning of something; to place at the start.

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.

Example: ‘And now he hath to her prefixt a day.’;

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;

Example: ‘prefixed words’;

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.

(transitive) To suffix.

(biology) To subject a sample to postfixation

Suffix.

A letter, syllable, or word, added to the end of another word; a suffix.

To annex; specifically (Gram.), to add or annex, as a letter, syllable, or word, to the end of another or principal word; to suffix.

an affix that is added at the end of the word