noun
international language; world language; global lingua franca
Refers to a language used for communication across different language communities, such as English today or Latin in the past. Often discussed in the context of language policy or global communication.
See also: 国際語
英語は現代の世界語と言われることがある。
English is sometimes called the world language of today.
世界語としての役割を果たす言語は時代とともに変わる。
The language that serves as a world language changes over time.
noun
constructed international auxiliary language; planned world language (e.g. Esperanto)
Specifically refers to artificially created languages designed for international communication, such as Esperanto, Ido, or Interlingua. Often contrasted with naturally evolved international languages.
See also: 国際補助語
エスペラントは最も有名な世界語の一つだ。
Esperanto is one of the most famous constructed international auxiliary languages.
世界語を学ぶことで、異なる文化
Some people believe that learning a constructed international language allows fair communication with people from different cultures.
国際補助語 explicitly means 'international auxiliary language' and is a more technical term for constructed languages like Esperanto. 世界語 in sense 2 is a common synonym.
Compound of 世界 (world) and 語 (language). The term was likely coined in the late 19th or early 20th century alongside the rise of constructed international languages.