The Tibeto-Burman languages are the non-Sinitic members of the Sino-Tibetan language family, over 400 of which are spoken throughout the highlands of Southeast Asia as well as certain parts of East Asia and South Asia. The name derives from the most widely spoken of these languages, namely Burmese (over 32 million speakers) and the Tibetic languages (over 8 million). Most of the other languages are spoken by much smaller communities, and many of them have not been described in detail.