[uncountable, countable] money paid, for example to employees, for things they need to buy every day日补贴；日津贴◆How do I find out how much per diem is allowable for my travel?我怎样才能知道自己出差的日津贴有多少？ⓘ Per diem is a Latin phrase meaning ‘for each day’.per diem 是拉丁语短语，意思是“每天”。