™ / ˈdɒlbi; ˈdəʊlbi; NAmE ˈdɔːlbi; ˈdoʊlbi/ noun
[ U ] a system for reducing background noise in sound recordings
For more information see the Cultural Guide
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WORD ORIGIN
1960s: named after Ray M. Dolby (born 1933), the American engineer who devised it.