/ ˈmɒnəʊ; NAmE ˈmɑːnoʊ/ adjective , noun
■ adjective
(also mono·phon·ic ) recording or producing sound which comes from only one direction :
a mono recording
—compare stereo
■ noun [ U ]
1.
a system of recording or producing sound which comes from only one direction :
recorded in mono
—compare stereo
2.
( NAmE , informal ) = glandular fever