Where does “ཚེས་གཅིག” come from?

ཚེས་གཅིག (Tibetan) comes from Tibetan གཅིག, from Proto-Sino-Tibetan *kV-tek — one.

Ancestry of “ཚེས་གཅིག”, step by step

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

via Tibetan གཅིག

StepLanguageWordMeaning
1Tibetanགཅིགone
2Proto-Sino-Tibetan*kV-tekone

via Tibetan ཚེས

StepLanguageWordMeaning
1Tibetanཚེསdate, day of the month
Every word from Proto-Sino-Tibetan *kV-tek →Every word from Tibetan གཅིག →