per diem Syllabification: (per di·em)Pronunciation: /pər ˈdēəm/Definition of per diem adverb & adjective for each day (used in financial contexts): [as adverb]:he agreed to pay at certain specified rates per diem [as adjective]:they are now demanding a per diem rate noun an allowance or payment made for each day. Origin: early 16th century: Latinper diem in other Oxford dictionaries Definition of per diem in the British & World English dictionary
