Where does “波束” come from?

波束 (Japanese) comes from Japanese 波, from Middle Chinese 波.

波束 (Japanese): wave packet

Definitions

  1. wave packet

Ancestry of “波束”, step by step

波束 traces back through two separate lines of ancestry.

via Japanese 波

StepLanguageWordMeaning
1Japanese波wave
2Middle Chinese波—

via Japanese 束

StepLanguageWordMeaning
1Japanese束bundle, bunch, batch, sheaf, coil; handbreadth,...
Every word from Middle Chinese 波 →Every word from Japanese 波 →