instrumental Pronunciation: /ˌɪnstrʊˈmentl/Translate instrumental | into German | into Italian | into Spanish French translation of instrumentalA. n instrumental (m)B. adj 1to be instrumental in sth/in doing = contribuer à qch/à faire 2 [Mus] instrumental/-einstrumental in other Oxford dictionaries Definition of instrumental in the British & World English dictionary Definition of instrumental in the US English dictionary