Where does “真珠貝” come from?

真珠貝 (Japanese) comes from Japanese 貝, from Old Japanese かい.

真珠貝 (Japanese): the pearl oyster, Japanese akoya oyster

Definitions

  1. the pearl oyster, Japanese akoya oyster

Ancestry of “真珠貝”, step by step

真珠貝 traces back through two separate lines of ancestry.

via Japanese 貝

StepLanguageWordMeaning
1Japanese貝a shellfish
2Old Japaneseかい—

via Japanese 真珠

StepLanguageWordMeaning
1Japanese真珠pearl
Every word from Old Japanese かい →Every word from Japanese 貝 →