Where does “ཚེས་བརྒྱད” come from?

ཚེས་བརྒྱད (Tibetan) comes from Tibetan བརྒྱད, from Proto-Sino-Tibetan *pV-rjat — eight.

Ancestry of “ཚེས་བརྒྱད”, step by step

ཚེས་བརྒྱད traces back through two separate lines of ancestry.

via Tibetan བརྒྱད

StepLanguageWordMeaning
1Tibetanབརྒྱདeight
2Proto-Sino-Tibetan*pV-rjateight

via Tibetan ཚེས

StepLanguageWordMeaning
1Tibetanཚེསdate, day of the month
Every word from Proto-Sino-Tibetan *pV-rjat →Every word from Tibetan བརྒྱད →