外がい部ぶ性せい

noun

externality; externalities

Economic term for a cost or benefit that affects a third party not directly involved in a transaction. Often used in contexts like environmental economics.

• 公こう害がいは負ふの外がい部ぶ性せいの典てん型けい的てきな例れいだ。

  Pollution is a typical example of a negative externality.

• 教きょう育いくには正せいの外がい部ぶ性せいがあると考かんがえられている。

  Education is thought to have positive externalities.