(a) When used herein, the term “State Department” shall mean the State Department of Public Welfare;

(b) The term “Commission” shall mean the Oklahoma Public Welfare Commission;

(c) The term “county board” shall mean the county board of public welfare;

(d) The term “Director” shall mean the Director of Public Welfare;

(e) The term “applicant” shall mean a person who has applied for assistance under this act;

(f) The term “recipient” shall mean any person who is receiving assistance under the terms of this act;

(g) The term “assistance” shall mean money payments to, medical care in behalf of, or any other kind of benefit to or for recipients who receive aid under the provisions of this act;

(h) The singular shall include the plural and the masculine shall include the feminine;

(i) The term “county department” shall mean the county board of public welfare, a county director of public welfare and such other personnel as may be necessary for the efficient performance of the duties of the county department;

(j) The term “Department” shall mean the State Department of Public Welfare and the county department of public welfare.