Bedeutung von “stereo” — Learner’s Dictionary

stereo

noun us uk /ˈsteriəʊ/
EQUIPMENT [ C ]

a piece of equipment for playing CDs, listening to the radio, etc that has two speakers (= parts where sound comes out):

a car stereo
SYSTEM [ U ]

a system for hearing music, speech, etc through two speakers (= parts where sound comes out):

The concert was broadcast in stereo.
stereo sound

(Definition von “stereo” aus dem Cambridge Learner's Dictionary © Cambridge University Press)