Where does “方位角” come from?

方位角 (Japanese) comes from Japanese 角, from Middle Chinese 角.

方位角 (Japanese): azimuth

Definitions

  1. azimuth

Ancestry of “方位角”, step by step

方位角 traces back through two separate lines of ancestry.

via Japanese 角

StepLanguageWordMeaning
1Japanese角A corner; An edge; A street corner
2Middle Chinese角—

via Japanese 方位

StepLanguageWordMeaning
1Japanese方位direction
Every word from Middle Chinese 角 →Every word from Japanese 角 →