per diem
adverb
[ pəː ˈdiːɛm ]
• for each day (used in financial contexts).
• "he agreed to pay at certain specified rates per diem"
per diem
adjective
• done, produced, or occurring each day (used in financial contexts).
• "they are now demanding a per diem rate"
per diem
noun
• an allowance or payment made for each day.
• "per diems are still allowed for out-of-state legislators"
Origin:
early 16th century: Latin.