Ï

Ï, lowercase ï, is a symbol used in various languages written with the Latin alphabet; it can be read as the letter I with diaeresis or I-umlaut.

In Afrikaans, Catalan, Dutch, French, Galician, Welsh, Southern Sami, and occasionally English, ⟨ï⟩ is used when ⟨i⟩ follows another vowel and indicates hiatus (diaeresis) in the pronunciation of such a word—that is, it indicates that the two vowels are pronounced in separate syllables, rather than together as a diphthong or digraph. For example, French maïs (IPA: [ma.is], maize); without the diaeresis, the ⟨i⟩ is part of the digraph ⟨ai⟩: mais (IPA: [mɛ], but). The letter is also in Dutch Oekraïne (pronounced [ukraːˈinə], Ukraine), and English naïve (/nɑːˈiːv/ or /naɪˈiːv/).

In scholarly writing on Turkic languages, ⟨ï⟩ is sometimes used to write the close back unrounded vowel /ɯ/, which in standard modern Turkish orthography is written as the dotless i ⟨ı⟩.^[1] The back neutral vowel reconstructed in Proto-Mongolic is sometimes written ⟨ï⟩.^[2]

In the transcription of the languages of the Amazon, ï is used to represent the high central vowel [ɨ].

Character information
Preview	Ï		ï
Unicode name	LATIN CAPITAL LETTER I WITH DIAERESIS		LATIN SMALL LETTER I WITH DIAERESIS
Encodings	decimal	hex	dec	hex
Unicode	207	U+00CF	239	U+00EF
UTF-8	195 143	C3 8F	195 175	C3 AF
Numeric character reference	Ï	Ï	ï	ï
Named character reference	Ï		ï
EBCDIC family	119	77	87	57
ISO 8859-1/2/3/4/9/10/14/15/16	207	CF	239	EF

References

^ Marcel Erdal, A Grammar of Old Turkic, Handbook of Oriental Studies 3, ISBN 9004102949, 2004, p. 52
^ Juha Janhunen, ed., The Mongolic Languages ISBN 0415681545, p. 5

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