Romanization
Words from languages natively written with other scripts, such as Arabic or Chinese, are usually transliterated or transcribed when embedded in Latin text or in multilingual international communication, a process termed Romanization.
Whilst the Romanization of such languages is used mostly at unofficial levels, it has been especially prominent in computer messaging where only the limited 7-bit ASCII code is available on older systems. However, with the introduction of Unicode, Romanization is now becoming less necessary. Note that keyboards used to enter such text may still restrict users to Romanized text, as only ASCII or Latin-alphabet characters may be available.
Read more about this topic: Latin Script