Where does “二乗” come from?

二乗 (Japanese) comes from Japanese 二, from Middle Chinese 二 — two.

二乗 (Japanese): squaring; square

Definitions

  1. squaring; square

Ancestry of “二乗”, step by step

二乗 traces back through two separate lines of ancestry.

via Japanese 二

StepLanguageWordMeaning
1Japanese二two, 2; second; two
2Middle Chinese二two

via Japanese 乗

StepLanguageWordMeaning
1Japanese乗power
Every word from Middle Chinese 二 →Every word from Japanese 二 →