trigraph

Noun

 * 1)  A specific sequence of three letters, especially one used collectively to represent a single phoneme.
 * 2)  A three-character sequence used to enter a single conceptual character.

Translations

 * Czech: trigraf
 * Finnish: kolmoiskirjain, trigrafi
 * French:
 * German:
 * Hungarian: trigráf
 * Polish:
 * Portuguese: trígrafo
 * Romanian: trigraf
 * Russian: