sign-language

The compound "sign-language" is a transparent English formation that directly combines two native elements to describe a specific communication system. The word "sign" traces back to the Latin signum, which conveyed the core idea of a distinguishing mark or signal. "Language" originates from Latin lingua, literally "tongue," which became a metonym for speech and, by extension, any system of communication. The compound, emerging in the early 19th century, logically applies the concept of "sign" to the domain of "language," creating a term for a linguistic system based on visual-gestural signs rather than vocal-auditory speech. This formation highlights how English can build precise terminology by combining familiar, semantically clear components.