Where does “半余矢” come from?

半余矢 (Japanese) comes from Japanese 半, from Middle Chinese 半.

半余矢 (Japanese): hacoversine; hacoversed sine

Definitions

  1. hacoversine; hacoversed sine

Ancestry of “半余矢”, step by step

半余矢 traces back through two separate lines of ancestry.

via Japanese 半

StepLanguageWordMeaning
1Japanese半odd; half, semi-; Antonyms
2Middle Chinese半—

via Japanese 余矢

StepLanguageWordMeaning
1Japanese余矢coversine; coversed sine
Every word from Middle Chinese 半 →Every word from Japanese 半 →