Where does “脱窒” come from?

脱窒 (Japanese) comes from Japanese 脱, from Middle Chinese 脫.

脱窒 (Japanese): denitrification

Definitions

  1. denitrification

Ancestry of “脱窒”, step by step

脱窒 traces back through two separate lines of ancestry.

via Japanese 脱

StepLanguageWordMeaning
1Japanese脱de-
2Middle Chinese脫—

via Japanese 窒

StepLanguageWordMeaning
1Japanese窒obstruction; nitrogen
Every word from Middle Chinese 脫 →Every word from Japanese 脱 →