Where does “硬度” come from?

硬度 (Japanese) comes from Japanese 硬 — hard.

硬度 (Japanese): hardness

Definitions

  1. hardness

Ancestry of “硬度”, step by step

硬度 traces back through two separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japanesehard

via Japanese

StepLanguageWordMeaning
1Japanesetime; whenever; time; degree of an angle
Every word from Japanese