Where does “腈” come from?

腈 (Chinese) comes from Chinese 氰, from Chinese 青, from Proto-Sino-Tibetan *sreŋ — to live.

Ancestry of “腈”, step by step

StepLanguageWordMeaning
1Chinese氰—
2Chinese青—
3Proto-Sino-Tibetan*sreŋto live
Every word from Proto-Sino-Tibetan *sreŋ →Every word from Chinese 青 →Every word from Chinese 氰 →