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| Kuchean | |
|---|---|
| Tocharian B | |
| Kuśiññe | |
|   Tocharian inscription "This Buddha was painted by the hand of Sanketava" | |
| Native to | Kucha | 
| Region | Tarim Basin | 
| Ethnicity | Tocharians | 
| Extinct | 9th century AD | 
|  Indo-European  
 | |
| Early form | |
| Language codes | |
| ISO 639-3 |  txb  | 
|  xtb Tocharian B | |
| Glottolog |  tokh1243  | 
| Part of a series on | 
| Indo-European topics | 
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|  Category | 
Kuchean (also known as Tocharian B 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. [1] The oldest stage is attested only in Kucha. There is also the middle ('classicalʼ), and the late stage. [2]
According to Peyrot, the self-designation for the language was kuśi 'Kuča'. [3] In scholarly works, it is known as Tocharian B, sometimes referred to as West Tocharian or Kuchean. [4]
According to scholar Michael Peyrot, Tocharian B is dated between the 5th and 10th centuries AD, and was spread from Kuča to Yānqi and Turfan. [5] Paul Widmer, following Tamai's and Adams's studies, situates Tocharian B roughly between 400 and 1200, its oldest layer dating from ca. 400 to 600, around "Kucha and environs". [6]
According to J. H. W. Penney, Tocharian B is reported to be documented as Buddhist religious literature, and as secular material "pertaining to everyday life". [7]