Letters that make per diem
d, e, p, m, r, i are letters that make 'per diem'
2 possible definitions for 'per diem'
Under this definition, per diem is a noun and has the following properties:
'per diem' can be a type of allowance.
Under this definition, per diem is an adjective and has the following properties:
by the day has the same meaning as per diem
"we'll save 100 man-hours per diem"