audio-visual

The compound adjective 'audio-visual' is a modern formation built from two classical Latin roots. The first element, 'audio-', originates from the Latin verb 'audire', meaning "to hear," which itself can be traced back to the Proto-Indo-European root h₂ew- (to perceive). The second element, '-visual', derives from the Latin noun 'visus' (sight), stemming from the verb 'videre' (to see), with a deeper origin in the PIE root weid- (to see, to know). The term's logic is transparently literal, directly combining the senses of hearing and sight. It emerged in the early 20th century to describe technologies and materials, such as films and slide-tape presentations, that engage both the auditory and visual senses to convey information or entertainment.

Structure: audio (hearing) + visual (sight) audio: From Latin 'audire' (to hear). In English, it functions as a combining form meaning "hearing" or "sound." visual: From Latin 'visus' (sight, thing seen). In English, it functions as an adjective-forming element meaning "relating to seeing or sight."