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per diem

1 per diem /pɚˈdiːjəm/ adverb
1 per diem
/pɚˈdiːjəm/
adverb
Britannica Dictionary definition of PER DIEM
formal
: for each day : per day

— per diem

adjective, always used before a noun
2 per diem /pɚˈdiːjəm/ noun
plural per diems
2 per diem
/pɚˈdiːjəm/
noun
plural per diems
Britannica Dictionary definition of PER DIEM
[count] US
: an amount of money given to someone for daily expenses (such as food or fuel)