senior Pronunciation: /ˈsiːnɪə(r)/Translate senior | into German | into Italian | into Spanish French translation of seniorA. n 1 (gen) aîné/-e (m/f) to be sb's senior = être plus âgé/-e que qn 2 (GB) [Sch] élève (mf) dans les grandes classes; (US) [Sch] élève (mf) de terminaleB. adj 1 (older) [person] plus âgé/-e 2 [civil servant] haut/-e (before n); [partner] principal/-e; [officer, job, post] supérieur/-esenior in other Oxford dictionaries Definition of senior in the British & World English dictionary Definition of senior in the US English dictionary