conlang

[ kon-lang ]
/ ˈkɒnˌlæŋ /

noun

an artificially constructed language used by a group of speakers, as opposed to one that has naturally evolved:conlangs such as Esperanto and Klingon.

Origin of conlang

First recorded in 1990–95; blend of con(structed) and lang(uage)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019