olemus
millegi üldise iseloomu inimhinnang järjestusskaalal,
eelkõige sides ja multimeediumi alal
=
a subjective metric that is obtained by having a group of people rate the perceived quality of a product or service

ülevaateid
https://www.igi-global.com/dictionary/mean-opinion-score-mos/18099

https://www.nojitter.com/analytics/mean-opinion-score-what-you-need-know

https://en.wikipedia.org/wiki/Mean_opinion_score