Where does “低級脂肪酸” come from?

低級脂肪酸 (Japanese) comes from Japanese 脂肪酸, from Japanese 酸, from Middle Chinese 酸.

低級脂肪酸 (Japanese): lower fatty acid

Definitions

  1. lower fatty acid

Ancestry of “低級脂肪酸”, step by step

低級脂肪酸 traces back through two separate lines of ancestry.

via Japanese 脂肪酸

StepLanguageWordMeaning
1Japanese脂肪酸fatty acid
2Japanese酸sourness; acid; Alternative spelling of 酢
3Middle Chinese酸—

via Japanese 低級

StepLanguageWordMeaning
1Japanese低級low grade, low level
Every word from Middle Chinese 酸 →Every word from Japanese 酸 →Every word from Japanese 脂肪酸 →