per diemadjective
ukusformalfor each day:
per diem allowance/payment/rate City officials received per diem payments of about $890 each.
per diemadverb
ukusformalused after an amount of money to mean 'for each day':
They attend meetings about once a month, for which they receive $100 per diem plus expenses.
per diemnoun [ C ]
ukusformal WORKPLACEan amount of money paid for each day that an employee works away from their home or their office, used to pay for food, travelling, etc.:
State workers when traveling are entitled to $40 per diems.