theory-a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena; theories can incorporate facts and laws and tested hypotheses; true in fact and theory.
wikiHow to Write Vendor Contracts. Some companies and organizations partner with vendors to provide a better product or service. Other businesses use vendors as contractors, providing something they need either on a one-time basis or an ongoing schedule. For example, many companies use vendors to supply technology, cleaning services, office equipment, or transportation. Anytime you use a vendor, you and the vendor should both sign a contract.
Prime Vendors. A prime vendor is any vendor that is awarded and holds a master contract with DIR. A prime vendor can be either a Manufacturer/Publisher, an authorized reseller of the Manufacturer/Publisher, or a service provider. Prime vendors can also name resellers for their products/services under their master contract.