stereo 2 BrE AmE ( also ster‧e‧o‧phon‧ic ) /ˌsteriəˈfɒnɪk◂, ˌstɪər- $ ˌsteriəˈfɑːnɪk◂, ˌstɪr-/ adjective
[ Date: 1900-2000 ; Origin: stereophonic (1900-2000) , from Greek stereos 'solid' + English phonic ]
using a recording or broadcasting system in which the sound is directed through two ↑ speaker s ⇨ mono , quadraphonic :
stereo equipment