trigraph
suomi-englanti sanakirjatrigraph englanniksi
A specific sequence of three letters, especially one used collectively to represent a single phoneme.
''Letter “i” is pronounced as /aɪ/ when followed by the trigraph “ght”, as in ''right'' /raɪt/.''
(quote-journal)
A three-character sequence used to enter a single conceptual character.
{{quote-text|en|year=1993|author=Mark Andrews|title=Visual C++ Object-oriented Programming|page=186