Where does “心拍計” come from?

心拍計 (Japanese) comes from Japanese 計, from Middle Chinese 計.

心拍計 (Japanese): heart rate monitor

Definitions

  1. heart rate monitor

Ancestry of “心拍計”, step by step

心拍計 traces back through two separate lines of ancestry.

via Japanese 計

StepLanguageWordMeaning
1Japanese計plan, total; -meter
2Middle Chinese計—

via Japanese 心拍

StepLanguageWordMeaning
1Japanese心拍heart rate, pulse rate
Every word from Middle Chinese 計 →Every word from Japanese 計 →