- The caret, used by writers and proof readers to indicate that something is missing
- Separates the base and exponent in a power expression
- n^2 = n² = n × n
- 2^n = 2ⁿ
- (programming) bitwise exclusive disjunction
- (computing) Indicates an ASCII control character in caret notation.
- ^W = end of control block
- (regular expressions) Matches the start position within the string. Compare $, which matches the end position within the string.
- (regular expressions) Used square brackets: [ ]. Matches a single character other than the characters and ranges specified between the square brackets.
[^abc]matches any character other than "a", "b", or "c".
[^a-z]matches any single character that is not a lowercase letter from "a" to "z"
- (dated, computing, as part of a keyboard shortcut) control key
- Press ^F to find text in your document.
- (Internet slang) Points to a message above in a forum, chat, etc.
- The circumflex accent.
- For the International Phonetic Alphabet, it is used over vowels and denotes a falling tone. (Mnemonic: start from the peak and move downwards in both directions.)
The symbol resembles an arrowhead pointing upward.
- (text messaging) up (in any sense)
- its ^ in d attic luv — It's up in the attic love.
- (text messaging) Replacing the letter sequence 'up' within a word.
- A diacritical mark of the Latin script, called ĉapelo (“hat”) in Esperanto, and found on Ĉ/ĉ, Ĝ/ĝ, Ĥ/ĥ, Ĵ/ĵ and Ŝ/ŝ.
- A diacritical mark of the Latin script, called accent circonflexe (“circumflex accent”) in French, and found on Â/â, Ê/ê, Î/î, Ô/ô and Û/û.
- A diacritical mark of the Latin script, called サーカムフレックス (“circumflex”) in Japanese, and found on Â/â, Ê/ê, Î/î, Ô/ô and Û/û.
In a number of romanization systems of Japanese, particularly Kunrei-shiki, the circumflex indicates that a vowel is a long vowel.
- A diacritical mark of the Latin script, called acento circunflexo (“circumflex accent”) in Portuguese, and found on Â/â, Ê/ê and Ô/ô.
- A diacritical mark of the Latin script, called dấu mũ (“hat mark”) in Vietnamese, and found on Â/â, Ầ/ầ, Ẩ/ẩ, Ẫ/ẫ, Ấ/ấ, Ậ/ậ, Ê/ê, Ề/ề, Ể/ể, Ễ/ễ, Ế/ế, Ệ/ệ, Ô/ô, Ồ/ồ, Ổ/ổ, Ỗ/ỗ, Ố/ố and Ộ/ộ.
In Vietnamese handwriting and signmaking, this diacritical mark often appears curved, similar to an inverted breve.