Where does “正規表現” come from?

正規表現 (Japanese) comes from Japanese 正規 — regularity.

正規表現 (Japanese): regular expression

Definitions

  1. regular expression

Ancestry of “正規表現”, step by step

正規表現 traces back through two separate lines of ancestry.

via Japanese 正規

StepLanguageWordMeaning
1Japanese正規regularity

via Japanese 表現

StepLanguageWordMeaning
1Japanese表現expression; representation; performance
Every word from Japanese 正規