Meaning of QUADRAPHONIC in English

QUADRAPHONIC

also quadriphonic adjective Etymology: irregular from quadri- + -phonic (as in stereophonic) Date: 1969 of, relating to, or using four channels for the transmission, recording, or reproduction of sound, ~s or quadriphonics noun plural but singular in construction

Merriam Webster. Explanatory English dictionary Merriam Webster.      Толковый словарь английского языка Мерриам-Уэбстер.