Tocharian B
| Tocharian B | |
|---|---|
| Kuchean | |
| Kuśiññe | |
| Tocharian inscription "This Buddha was painted by the hand of Sanketava" | |
| Native to | Kucha | 
| Region | Tarim Basin | 
| Ethnicity | Tocharians | 
| Extinct | 850 AD | 
| Indo-European
 
 | |
| Early form | |
| Language codes | |
| ISO 639-3 | txb | 
| xtbTocharian B | |
| Glottolog | tokh1243 | 
| Tocharian languages A (blue), B (red) and C (green) in the Tarim Basin. Tarim oasis towns are given as listed in the Book of Han (c. 2nd century BC), with the areas of the squares proportional to population. | |
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Tocharian B (also known as Kuchean or West Tocharian) was a Western member of the Tocharian branch of Indo-European languages, extinct from the ninth century. Once spoken in the Tarim Basin in Central Asia, Tocharian B shows an internal chronological development; three linguistic stages have been detected. The oldest stage is attested only in Kucha. There is also the middle ('classicalʼ), and the late stage.