48 C.F.R. § 13.001
As used in this part-
Authorized individual means a person who has been granted authority, in accordance with agency procedures, to acquire supplies and services in accordance with this part.
Governmentwide commercial purchase card means a purchase card, similar in nature to a commercial credit card, issued to authorized agency personnel to use to acquire and to pay for supplies and services.
Imprest fund means a cash fund of a fixed amount established by an advance of funds, without charge to an appropriation, from an agency finance or disbursing officer to a duly appointed cashier, for disbursement as needed from time to time in making payment in cash for relatively small amounts.
Third party draft means an agency bank draft, similar to a check, that is used to acquire and to pay for supplies and services. (See Treasury Financial Management Manual, Section 3040.70.)
48 C.F.R. §13.001