20-letter words containing r, u, n, l
- bouvier des flandres — any of a breed of large, strong dog with a rough, wiry coat and pointed, erect ears
- british thermal unit — a unit of heat in the fps system equal to the quantity of heat required to raise the temperature of 1 pound of water by 1°F. 1 British thermal unit is equivalent to 1055.06 joules or 251.997 calories
- broadcast journalism — journalism as practiced in radio and television.
- brown lung (disease) — a chronic disease of the lungs caused by inhalation of fine textile fibers, esp. cotton; byssinosis
- brown recluse spider — a very poisonous, medium-sized spider (Loxosceles reclusa), common in the U.S., having a violin-shaped mark on its cephalothorax and only six eyes
- buck's horn plantain — a Eurasian plant, Plantago coronopus, having leaves resembling a buck's horn: family Plantaginaceae
- buckminsterfullerene — a form of carbon that contains molecules having 60 carbon atoms arranged at the vertices of a polyhedron with hexagonal and pentagonal faces. It is produced in carbon arcs and occurs naturally in small amounts in certain minerals
- by/from all accounts — If you say that something is true by all accounts or from all accounts, you believe it is true because other people say so.
- calcium permanganate — a violet, crystalline, deliquescent solid, Ca(MnO 4) 2 ⋅4H 2 O, used chiefly as a disinfectant and deodorizer.
- california barracuda — a small, slender barracuda, Sphyraena argentea, of coastal seas from Alaska to Baja California, valued as a food fish.
- carbocyclic compound — any of a group of organic chemical compounds in which all the atoms composing the ring are carbon atoms, as benzene or cyclopropane.
- card up one's sleeve — a plan or resource kept secret or held in reserve
- cavalleria rusticana — an opera (1890) by Pietro Mascagni.
- cellular respiration — the oxidation of organic compounds that occurs within cells, producing energy for cellular processes.
- centrifugal spinning — the spinning of rayon filaments in a centrifugal box.
- channel service unit — (communications) (CSU) A type of interface used to connect a terminal or computer to a digital medium in the same way that a modem is used for connection to an analogue medium. A CSU is provided by the communication carrier to customers who wish to use their own equipment to retime and regenerate the incoming signals. The customer must supply all of the transmit logic, receive logic and timing recovery in order to use the CSU, whereas a digital service unit DSU performs these functions.
- checkbook journalism — the practice of paying for a news story or an interview, or for exclusive broadcasting or publishing rights.
- child support agency — the British government agency concerned with the welfare of children
- clear air turbulence — turbulent air, not associated with a storm, that affects the flight of aircraft
- clear-air turbulence — atmospheric turbulence, sometimes severe, occurring in air devoid of clouds or other visible indicators that turbulence might be present. Abbreviation: CAT.
- clothes manufacturer — a business concern that manufactures clothes
- compensation culture — a culture in which people are very ready to go to law over even relatively minor incidents in the hope of gaining compensation
- complaints procedure — a prescribed method of lodging a complaint to an institution
- complementary colour — one of any pair of colours, such as yellow and blue, that give white or grey when mixed in the correct proportions
- consumer electronics — computers and other electronic devices designed for private individuals as opposed to businesses
- controlled substance — a drug regulated by the Federal Controlled Substances Acts, including opiates, depressants, stimulants, and hallucinogens
- convergent evolution — the evolutionary development of a superficial resemblance between unrelated animals that occupy a similar environment, as in the evolution of wings in birds and bats
- convertible currency — A convertible currency is a currency that can be bought and sold on the open market for other currencies.
- council of ministers — the EU's most important decision-making body
- council of the reich — the Reichsrat.
- 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
- counter-intelligence — Counter-intelligence consists of actions that a country takes in order to find out whether another country is spying on it and to prevent it from doing so.
- 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.
- counterrevolutionist — A counterrevolutionary.
- crude oil evaluation — Crude oil evaluation is the process of assessing the chemical and physical properties of crude oil, against particular standards.
- cycloidal propulsion — propulsion of a vessel by propellers of controllable pitch that steer as well as propel.
- declarative language — (language) Any relational language or functional language. These kinds of programming language describe relationships between variables in terms of functions or inference rules, and the language executor (interpreter or compiler) applies some fixed algorithm to these relations to produce a result. Declarative languages contrast with imperative languages which specify explicit manipulation of the computer's internal state; or procedural languages which specify an explicit sequence of steps to follow. The most common examples of declarative languages are logic programming languages such as Prolog and functional languages like Haskell. See also production system.
- 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.
- deoxyribonucleotides — Plural form of deoxyribonucleotide.
- developing-out paper — a sensitized printing paper requiring development in order to bring out the image. Abbreviation: D.O.P.
- 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
- digital service unit — data service unit
- dirac delta function — delta function.
- disability insurance — insurance providing income to a policyholder who is disabled and cannot work.
- displacement current — the rate of change, at any point in space, of electric displacement with time.
- distribution channel — trade: retailer
- 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.