Where does “拡張子” come from?

拡張子 (Japanese) comes from Japanese 子, from Japanese 鼠, from Japanese nezumi.

拡張子 (Japanese): a file extension

Definitions

  1. a file extension

Ancestry of “拡張子”, step by step

拡張子 traces back through two separate lines of ancestry.

via Japanese 子

StepLanguageWordMeaning
1Japanese子a child; a girl, especially a dear or desired...
2Japanese鼠a mouse or a rat; general term for members of...
3Japanesenezumi—

via Japanese 拡張

StepLanguageWordMeaning
1Japanese拡張An expansion or extension of range, scale or...
Every word from Japanese nezumi →Every word from Japanese 鼠 →Every word from Japanese 子 →