22-letter words containing r, e, p, u
- turbo-propeller engine — a jet engine with a turbine-driven propeller that produces the principal thrust, augmented by the thrust of the jet exhaust.
- unconditioned response — a reflex action innately elicited by a stimulus without the intervention of any learning process
- unemployment insurance — a government program that provides a limited number of payments to eligible workers who are involuntarily unemployed.
- united empire loyalist — any of the American colonists who settled in Canada during or after the War of American Independence because of loyalty to the British Crown
- universal postal union — an international organization, formed in Bern, Switzerland (1875), that administers and regulates international postal service. Abbreviation: UPU.
- universal product code — a bar code that indicates price, product classification, etc., and can be read electronically, as at checkout counters in supermarkets. Abbreviation: UPC.
- unprofessional conduct — activity that is contrary to the accepted code of conduct of a profession
- unsaturated production — Unsaturated production is the production of smaller, unsaturated hydrocarbons from saturated hydrocarbons, for example producing alkenes such as ethane and propene.
- upright vacuum cleaner — a vacuum cleaner that is tall rather than wide
- urban development zone — an area that is designated as being a site for urban development
- user datagram protocol — (protocol) (UDP) Internet standard network layer, transport layer and session layer protocols which provide simple but unreliable datagram services. UDP is defined in STD 6, RFC 768. It adds a checksum and additional process-to-process addressing information [to what?]. UDP is a connectionless protocol which, like TCP, is layered on top of IP. UDP neither guarantees delivery nor does it require a connection. As a result it is lightweight and efficient, but all error processing and retransmission must be taken care of by the application program.
- weigh anchor/up anchor — When the people on a boat weigh anchor or up anchor, they pull the anchor of the boat out of the water so that they can sail away.
- white australia policy — an unofficial term for an immigration policy designed to restrict the entry of non-White people into Australia
- zero population growth — the maintenance of a population at a constant level by limiting the number of live births to that needed to replace the existing population.