Where does “三振” come from?

三振 (Japanese) comes from Japanese 三, from Middle Chinese さん.

三振 (Japanese): a strikeout; to strike out

Definitions

  1. a strikeout; to strike out

Ancestry of “三振”, step by step

三振 traces back through two separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japanesethree, 3; third; three
2Middle Chineseさん

via Japanese

StepLanguageWordMeaning
1Japaneseswinging; swing
Every word from Middle Chinese さんEvery word from Japanese