Relating to or involving both ears; using two ears for hearing or perception.
From Latin 'bi-' (two) plus 'auralis' (relating to ears, from 'auris' meaning ear). This medical and sensory term emerged in the 20th century.
Your brain actually uses biaural hearing to locate sounds in 3D space—each ear gets slightly different timing and volume information, and your brain does incredible geometry to figure out where a sound comes from!
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