A purchase order (PO) is a commercial document issued by a buyer to a seller, indicating types, quantities, and agreed prices for products or services required. [1] New to USPS.com? Create a USPS.com Account to. print shipping labels. request a Package Pickup. buy stamps and shop. manage PO boxes. print custom forms online. file domestic claims. set a preferred language. Find USPS Locations Search for nearby Post Office™ locations, Collection Boxes, Self-Service Kiosks, and services like PO Boxes™ and Money Orders. In every business transaction between a buyer and a seller, the initial step that sets everything in motion is the issuance of a purchase order (PO). Purchase orders serve as a formal document issued by a buyer to a seller, outlining the details of goods or services they wish to purchase. A purchase order (PO) is an official document that is sent from a buyer to a seller, documenting the agreement for a sale of specific products and/or services. Looking for online definition of PO or what PO stands for? PO is listed in the World's most authoritative dictionary of abbreviations and acronyms. There’s good and bad news for Democrats. A Post-Schar School finds 53 percent of Michigan’s likely voters say they want Democrats to control the Senate, but 48 percent support Democrat Abdul. This disambiguation page lists articles associated with the title Po. If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article. This page illustrates how PO is used in messaging and chat forums, in addition to social networking software like VK, Instagram, Whatsapp, and Snapchat. From the table above, you can view all meanings of PO: some are educational terms, the other are medical terms, and even computer terms. Explore GPT-6-Astra, Claude-Fable-5.1, Grok-4.6, Kimi-K3, GPT-5.6-Sol, and thousands of others, all on Poe.