20-letter words containing r, u, n, a, o
- construction company — a business enterprise concerned with the construction of buildings, bridges, etc
- continuity announcer — A continuity announcer is someone who introduces the next programme on a radio or television station.
- continuous variation — variation in phenotypic traits such as body weight or height in which a series of types are distributed on a continuum rather than grouped into discrete categories. Compare discontinuous variation.
- contradistinguishing — Present participle of contradistinguish.
- controlled substance — a drug regulated by the Federal Controlled Substances Acts, including opiates, depressants, stimulants, and hallucinogens
- council-manager plan — (in the US) a system of local government with an elected legislative council and an appointed administrative manager
- counter-inflationary — designed to reduce inflation
- counterdemonstration — a demonstration that is held in reaction to another demonstration
- counterproliferation — Action intended to prevent an increase or spread in the possession of nuclear weapons.
- counterrevolutionary — Counterrevolutionary activities are activities intended to reverse the effects of a previous revolution.
- crude oil evaluation — Crude oil evaluation is the process of assessing the chemical and physical properties of crude oil, against particular standards.
- cut one's own throat — to be the means of one's own ruin
- cut the gordian knot — to find a quick, bold solution for a perplexing problem
- cycloidal propulsion — propulsion of a vessel by propellers of controllable pitch that steer as well as propel.
- declaratory judgment — a judgment that merely decides the rights of parties in a given transaction, situation, or dispute but does not order any action or award damages.
- developing-out paper — a sensitized printing paper requiring development in order to bring out the image. Abbreviation: D.O.P.
- diamond in the rough — a diamond in its natural state
- dictionary catalogue — a catalogue of the authors, titles, and subjects of books in one alphabetical sequence
- differential housing — the casing that houses the differential of a motor vehicle
- dirac delta function — delta function.
- directory user agent — (DUA) The software that accesses the X.500 Directory Service on behalf of the directory user. The directory user may be a person or another software element.
- distribution channel — trade: retailer
- documentary evidence — law: written
- double fertilization — the fertilization process characteristic of flowering plants, in which one sperm cell of a pollen grain fertilizes an egg cell while a second fuses with two polar nuclei to produce a triploid body that gives rise to the endosperm.
- drum and bugle corps — a marching band of drum players and buglers.
- drunk and disorderly — If someone is charged with being drunk and disorderly, they are charged with being drunk and behaving in a noisy, offensive, or violent way in public.
- duck-billed dinosaur — hadrosaur.
- early sunday morning — a painting (1930) by Edward Hopper.
- education department — the department of a local authority that is concerned with education, or the government department concerned with education
- eleanor of aquitaine — ?1122–1204, queen of France (1137–52) by her marriage to Louis VII and queen of England (1154–89) by her marriage to Henry II; mother of the English kings Richard I and John
- electoral boundaries — the way that a country or area is divided for the purposes of voting in an election
- electromagnetic pump — a device for pumping liquid metals by placing a pipe between the poles of an electromagnet and passing a current through the liquid metal
- electromagnetic unit — any unit that belongs to a system of electrical cgs units in which the magnetic constant is given the value of unity and is taken as a pure number
- electronic signature — electronic proof of a person's identity
- elementary education — the first six to eight years of a child's education
- elizabeth of hungary — Saint. 1207–31, Hungarian princess who devoted herself to charity and asceticism. Feast day: Nov 17 and 19
- entry qualifications — the qualifications people wishing to enter an organization, university, etc, have to have
- equilibrium constant — The equilibrium constant is the ratio between the amount of reactants and the amount of product for a particular chemical reaction, used to calculate chemical behavior.
- equivalence relation — (mathematics) A relation R on a set including elements a, b, c, which is reflexive (a R a), symmetric (a R b => b R a) and transitive (a R b R c => a R c). An equivalence relation defines an equivalence class. See also partial equivalence relation.
- erythema infectiosum — a mild infectious disease of childhood, caused by a virus, characterized by fever and a red rash spreading from the cheeks to the limbs and trunk
- estrela mountain dog — a sturdy well-built dog of a Portuguese breed with a long thick coat and a thick tuft of hair round the neck, often used as a guard dog
- european social fund — one of the four Structural Funds of the European Union which aims to support employment and the economic and social well-being of EU member countries
- factor of production — any instrument, agent, etc., employed in the production of goods and services.
- federal constitution — Constitution of the United States.
- flame-fusion process — Verneuil process.
- flavour of the month — If you think that something or someone is very popular at a particular time, you can say that they are flavour of the month.
- fold-and-thrust belt — a linear or arcuate region of the earth's surface that has been subjected to severe folding and thrust faulting
- for your information — (FYI) A subseries of RFCs that are not technical standards or descriptions of protocols. FYIs convey general information about topics related to TCP/IP or the Internet. See also STD.
- fourteenth amendment — an amendment to the U.S. Constitution, ratified in 1868, defining national citizenship and forbidding the states to restrict the basic rights of citizens or other persons.
- fourth international — a loose federation of small groups of radical socialists formed in 1936 under the leadership of Leon Trotsky and hostile to the Soviet Union. Compare international (def 6).