Where does “량서류” come from?

량서류 (Korean) comes from Chinese 類, from Proto-Sino-Tibetan rus — bone.

Ancestry of “량서류”, step by step

StepLanguageWordMeaning
1Chinese類—
2Proto-Sino-Tibetanrusbone
Every word from Proto-Sino-Tibetan rus →Every word from Chinese 類 →
량서류 — Etymology, Origin & Word History | Etymology Explorer