Ï

The Ï (I with diéresis) is a letter used in Afrikaans, Greek, French, Galician, Dutch and Catalan in order to avoid the diphthong of words such as maïs (maize in French and Dutch), Oekraïne (Ukraine in Afrikaans and Dutch), naïf (naive in French), we fall (we fall in Galician) or raïm (grape in Catalan).

In Spanish it is used in poetry with the same objective: to force the reading with hiatus of vowels that usually form diphthong, like vïuda.

In several transcriptions of Amerindian languages ​​is used to transcribe a "central i" ie a closed central vowel whose sign AFI is ɨ.

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