prefix

A letter or group of letters added at the start of a word to change its meaning.

• The prefix un makes some words negative.
• We learned three prefixes today.
• Can you add a prefix to this word?

Similar words: forefix, prefixum

Common phrases: negative prefix, add a prefix, the prefix un

Numbers at the start of a phone number that show its area or type.

• This prefix identifies mobile phone numbers.
• Which prefix do I dial for international calls?
• Both numbers have the same prefix.

Similar words: dialling code

Common phrases: telephone prefix, country prefix, a prefix of

The first part of a series of letters, numbers, or other written signs.

• These filenames share a prefix.
• The program checks the prefix of each string.
• Remove the first two characters of the prefix.

Common phrases: string prefix, common prefix, matching prefix

To put something at the beginning of something else.

• Prefix each name with a title.
• She prefixed her statement with an apology.
• The system prefixes a code to every filename.

How to use it: prefix something with something (Prefix the number with the country code.); prefix something to something (They prefixed a warning to the report.)

Similar words: prepend

Common phrases: prefix something with, prefix to something

To decide or arrange something before it happens.

• They prefixed a date for the meeting.
• The council had prefixed the hour of departure.
• We must prefix the time before sending invitations.

Similar words: fix, set

Common phrases: prefix a date, prefix the time