SM - a master's degree in science Master of Science, MSc, MS master's degree - an academic degree higher than a bachelor's degree but lower than a doctor's degree
DEFINITION of 'Per Diem Payments'. Generally, a specified amount that employers will pay to employees as reimbursement for various expenses. Per diem payments usually assume a set dollar limit, such as $30 per day for meals or $100 per day for lodging. These payments are usually made for employee travel expenses.er diem payments are usually counted as nontaxable income to employees, up to a certain amount, and any excess reimbursement is included in box 12 of the W-2 form. The IRS allows a preset amount to be excluded from taxation for each type of per diem expense. RELATED TERMS.
  Per diem is Latin for 'per day' or 'for each day'. Usually it refers to the daily rate of any kind of payment. It may also refer to a specific amount of money that an or â¦ ganization allows an individual to spend per day, to cover living and traveling expenses in connection with work.Hope I helped =3. Latin phrase meaning Per day or for each day.   Also   Per diem can mean on a case-by-case basis. The term per diem is a Latin term meaning per day or â¦ alternatively for each day. It refers to the organisation's allowance for an employee to spend as expenses per day.