Classical Mongolian is an extinct Mongolic

Mongolic languages

The Mongolic languages are a group of languages spoken in East-Central Asia, mostly in Mongolia and surrounding areas plus in Kalmykia. The best-known member of this language family, Mongolian, is the primary language of most of the residents of Mongolia and the Mongolian residents of Inner...

 language formerly used in Mongolia

Mongolia

Mongolia is a landlocked country in East and Central Asia. It is bordered by Russia to the north and China to the south, east and west. Although Mongolia does not share a border with Kazakhstan, its western-most point is only from Kazakhstan's eastern tip. Ulan Bator, the capital and largest...

, China

China

Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

, and Russia

Russia

Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

. It is a standardized written language used in a number of written texts such as the translation of the Kanjur and Tanjur and several cronicles roughly between 1700 and 1900. The term is sometimes also used to refer to any language documents in Mongolian script

Mongolian script

The classical Mongolian script , also known as Uyghurjin, was the first writing system created specifically for the Mongolian language, and was the most successful until the introduction of Cyrillic in 1946...

 that are neither Pre-classical nor modern Mongolian

Mongolian language

The Mongolian language is the official language of Mongolia and the best-known member of the Mongolic language family. The number of speakers across all its dialects may be 5.2 million, including the vast majority of the residents of Mongolia and many of the Mongolian residents of the Inner...

.