prefix Definition

a word, letter, or number placed before another.

Using prefix: Examples

Take a moment to familiarize yourself with how "prefix" can be used in various situations through the following examples!

  • Example

    The prefix 'un' changes the meaning of the word 'happy' to 'unhappy'.

  • Example

    The prefix 'pre' means 'before'.

  • Example

    The prefix 'co' means 'together'.

  • Example

    The prefix 'anti' means 'against'.

prefix Synonyms and Antonyms

Phrases with prefix

  • a mathematical notation where operators are placed before their operands


    In prefix notation, the expression '+ 2 3' is equivalent to the infix notation '2 + 3'.

  • a type of code used in data compression where each code word is a prefix of no other code word


    Huffman coding is an example of a prefix code.

  • a sequence of partial sums of a given sequence


    The prefix sum of the sequence [1, 2, 3, 4] is [1, 3, 6, 10].

Origins of prefix

from Latin 'praefixus', meaning 'fixed in front'


Summary: prefix in Brief

A 'prefix' [ˈpriːfɪks] is a word, letter, or number that is placed before another. It can change the meaning of a word, such as 'un' in 'unhappy,' or provide context, such as 'pre' in 'preview.' 'Prefix' also has technical uses in fields like mathematics and computer science, such as 'prefix notation' and 'prefix code.'