In Afrikaans, î is a punctuated form of i: wîe, the plural of wig. glyphs for Majuscule and minuscule î.
French
Î is a letter which appears in several French words, like naître, abîme, maître, fraîche and more. Unlike Â, Ê, and Ô, the circumflex does not alter the pronunciation of î or û. The circumflex usually denotes the exclusion of a letter that was in a prior version of the word:
voster became vôtre.
abismus became abisme and then abîme.
magister became maistre and then maître.
The 1990 spelling reforms removed the accents if they are not required to distinguish between homonyms and so naitre, abime, maitre and fraiche no longer take the circumflex. wikt:le vôtre, however, uses the circumflex to distinguish it from wikt:votre.
Friulian
Î is used to get a longer value of I, becoming. It can be found for example in all verbs of the fourth conjugation: pandî,. Another use of Î, is dued to Latin derivation. Instead of preserving the last vowel, in Friulian it was used to give a longer value to the penultimate vowel, ending the word with a consonant: gliru < glîr,, where the ending u disappeared.
Italian
In Italian the circumflex accent is an optional accent. While the accent itself has many uses, with the letter "i" it is only used while forming the plural of male nouns ending in -io in order to minimize both ambiguity and the stressing of the wrong syllable: principio has the plural principî, and principe has principi as plural. In this situation it can be replaced with a double "i", with an i followed by a j, with a single j or, more simply, with a single "i". In contemporary usage is utilized mostly the single "i" while the other variants are seen as archaic and overly formal.
Î is the 12th letter of the Romanian alphabet and denotes. This sound is also represented in Romanian as letter â. The difference is that â is used in the middle of a word, as in România, but î is used at the beginning or the end of a word: înțelegere, a urî. A compound word starting with the letter î retains it, even if it is in the middle of the word: neînțelegere. However, if a suffix is added, the î changes into â, as in the example: a urî, urât.
Turkish
In Turkish, î can indicate the sound inArabic loanwords where it is used as an adjectival suffix that makes an adjective from a noun: askerî, millî, dâhilî etc.
Welsh
In Welsh, î is used to represent long stressedi when, without the circumflex, the vowel would be pronounced as short , as opposed to dim "no, nought, nothing".
Other usage
In mathematics
The letter is sometimes used to denote a unit vector in physics
