国こく際さい補ほ助じょ語ご

noun

international auxiliary language

A constructed language designed for communication between people of different native languages, such as Esperanto or Interlingua.

• エスペラントは有ゆう名めいな国こく際さい補ほ助じょ語ごの一ひとつです。

  Esperanto is one of the well-known international auxiliary languages.