16-letter words containing a, b, u
- norwegian buhund — a slightly-built medium-sized dog of a breed with erect pointed ears and a short thick tail carried curled over its back
- nubuck (leather) — tanned leather similar to suede, but with the nap on the grain side
- nuclear membrane — the double membrane surrounding the nucleus within a cell.
- nuclear umbrella — a guarantee from a country or state that possesses nuclear weapons to a country that does not that they will defend them
- numbered account — a bank account whose owner is identified by a number for the purpose of preserving anonymity.
- oblique triangle — any triangle that does not have a right angle (contrasted with right triangle).
- oblique zenithal — a type of map projection in which part of the earth's surface is projected onto a plane tangential to it between the poles and the equator
- obsequent stream — a stream flowing in a direction opposite to that of the dip of the local strata.
- of human bondage — a novel (1915) by W. Somerset Maugham.
- onboard computer — onboard a vehicle, ship, plane, train or spacecraft
- operating budget — money allocated to a project
- ordinary jubilee — the celebration of any of certain anniversaries, as the twenty-fifth (silver jubilee) fiftieth (golden jubilee) or sixtieth or seventy-fifth (diamond jubilee)
- organized labour — labour carried out by workers in trade unions, or the workers themselves
- outboard profile — an exterior side elevation of a vessel, showing all deck structures, rigging, fittings, etc.
- overurbanization — the act or fact of urbanizing, or taking on the characteristics of a city: Urbanization has led to more air pollution and increasing childhood asthma.
- oxidation number — the state of an element or ion in a compound with regard to the electrons gained or lost by the element or ion in the reaction that formed the compound, expressed as a positive or negative number indicating the ionic charge of the element or ion.
- paint-by-numbers — formulaic; showing no original thought or creativity
- paratuberculosis — Johne's disease.
- patent ambiguity — uncertainty of meaning created by the obscure or ambiguous language appearing on the face of a written instrument.
- photograph album — bound book for photos
- pietermaritzburg — a province in the E part of the Republic of South Africa. 35,284 sq. mi. (91,886 sq. km). Capital: Pietermaritzburg.
- planetary nebula — an expanding shell of thin ionized gas that is ejected from and surrounds a hot, dying star of about the same mass as the sun; the gas absorbs ultraviolet radiation from the central star and reemits it as visible light by the process of fluorescence.
- potato tuberworm — the larva of the potato moth.
- public relations — (used with a plural verb) the actions of a corporation, store, government, individual, etc., in promoting goodwill between itself and the public, the community, employees, customers, etc.
- public transport — fare-paying travel
- publication date — the date on which a book or periodical is or is planned to be published.
- publicity agency — an advertising agency; a firm that gets publicity for people or products
- put in mothballs — to postpone work on (a project, activity, etc)
- query by example — (database, language) (QBE) A user-friendly query language developed by Moshé Zloof of IBM in 1975.
- questionableness — The state or condition of being questionable; dubiousness.
- rambunctiousness — difficult to control or handle; wildly boisterous: a rambunctious child.
- raster subsystem — (graphics) The part of a graphics system concerned with an image after it has been transformed and scaled to screen coordinates. It includes scan conversion and display.
- razor-billed auk — a black and white auk, Alca torda, of the American and European coasts of the northern North Atlantic, having a compressed black bill encircled by a white band.
- reaction turbine — a turbine driven by the reactive force of a fluid passing through the rotor blades.
- reasonable doubt — law: grounds for believing sb is innocent
- rectus abdominis — a long flat muscle that extends along the whole length of both sides of the abdomen. It flexes the vertebral column, particularly the lumbar portion; it also tenses the anterior abdominal wall and assists in compressing the abdominal contents
- redistributional — a distribution performed again or anew.
- republican party — one of the two major political parties in the U.S.: originated 1854–56.
- republican river — a river flowing E from E Colorado through Nebraska and Kansas into the Kansas River. 422 miles (680 km) long.
- reserve buoyancy — the difference between the volume of a hull below the designed waterline and the volume of the hull below the lowest opening incapable of being made watertight.
- rhythm and blues — a folk-based but urbanized form of black popular music that is marked by strong, repetitious rhythms and simple melodies and was developed, in a commercialized form, into rock-'n'-roll.
- rhythm-and-blues — a folk-based but urbanized form of black popular music that is marked by strong, repetitious rhythms and simple melodies and was developed, in a commercialized form, into rock-'n'-roll.
- ribonucleic acid — RNA.
- rich tea biscuit — any of various semisweet biscuits
- right about face — Military. a command, given to a soldier or soldiers at attention, to turn the body about toward the right so as to face in the opposite direction. the act of so turning in a prescribed military manner.
- right honourable — (in Britain and certain Commonwealth countries) a title of respect for a Privy Councillor or an appeal-court judge
- rough and tumble — characterized by violent, random, disorderly action and struggles: a rough-and-tumble fight; He led an adventuresome, rough-and-tumble life.
- rough-and-tumble — characterized by violent, random, disorderly action and struggles: a rough-and-tumble fight; He led an adventuresome, rough-and-tumble life.
- round lake beach — a town in NE Illinois.
- roundabout chair — corner chair.