Refers to a language deliberately constructed rather than naturally evolved, such as Esperanto or programming languages. Often used in contrast with 自然言語 (natural language).
See also: 人工言語
Esperanto is one of the well-known artificial languages.
I am researching the differences between artificial and natural languages.
人工言語 is a synonym of 人工語, but 人工語 is slightly more common in everyday contexts.
Compound of 人工 (じんこう, 'artificial') and 語 (ご, 'language').