18-letter words containing r, u
- cultural diversity — the cultural variety and cultural differences that exist in the world, a society, or an institution: Dying languages and urbanization are threats to cultural diversity.
- cultural pluralism — a condition in which minority groups participate fully in the dominant society, yet maintain their cultural differences.
- cultural sociology — the study of the origins and development of societal institutions, norms, and practices.
- cultural universal — a cultural pattern extant in every known society.
- cumberland plateau — division of the W Appalachians, extending from S W.Va. to N Ala.
- cumbrian mountains — a mountain range in NW England, in Cumbria. Highest peak: Scafell Pike, 977 m (3206 ft)
- cumulative scoring — a method of scoring in which the score of a partnership is taken as the sum of their scores on all hands played.
- cunninghame graham — R(obert) B(ontine). 1852–1936, Scottish traveller, writer, and politician, noted for his essays and short stories: first president (1928) of the Scottish Nationalist Party
- currency principle — the principle that banks should be permitted to issue notes only against bullion or coin.
- current efficiency — the ratio of the actual mass of a substance liberated from an electrolyte by the passage of current to the theoretical mass liberated according to Faraday's law
- curriculum council — a council appointed to oversee the development and implementation of a curriculum
- cursor dipped in x — (jargon) The metaphorical source of the electronic equivalent of a poisoned-pen letter. Derived from English metaphors of the form "pen dipped in X" (where X = e.g. "acid", "bile", "vitriol"). These map over neatly to this hackish usage (the cursor being what moves, leaving letters behind, when one is composing on-line). "Talk about a nastygram! He must've had his cursor dipped in acid when he wrote that one!"
- curvature of field — a monochromatic aberration of a lens or other optical system in which the focal surface is curved, the refracted image of an object oriented perpendicular to the axis of the lens lying on a curved surface rather than in a plane perpendicular to the axis.
- curvature of space — (in relativity) a property of space near massive bodies in which their gravitational field causes light to travel along curved paths.
- cushing's syndrome — a medical condition characterized by obesity, hypertension, excessive hair growth, etc., caused by an overactive adrenal gland or large doses of corticosteroids
- customer relations — Customer relations are the relationships that a business has with its customers and the way in which it treats them.
- cutthroat contract — a form of contract bridge for four persons in which partners are decided by the bidding.
- dafydd ap gruffudd — died 1283, Welsh leader. Claiming the title Prince of Wales (1282), he led an unsuccessful revolt against Edward I: executed
- dangerous offender — an offender who is deemed by a court of law to be likely to engage in further violent conduct, and who thus becomes eligible for an indefinite prison sentence
- de bruijn notation — (language) A variation of lambda notation for specifying functions using numbers instead of names to refer to formal parameters. A reference to a formal parameter is a number which gives the number of lambdas (written as \ here) between the reference and the lambda which binds the parameter. E.g. the function \ f . \ x . f x would be written \ . \ . 1 0. The 0 refers to the innermost lambda, the 1 to the next etc. The chief advantage of this notation is that it avoids the possibility of name capture and removes the need for alpha conversion.
- death-valley curve — a curve on a graph showing how the capital of a new company plotted against time declines sharply as the venture capital is used up before income reaches predicted levels
- debt restructuring — Debt restructuring is a method of organizing a company's debts in a different way in order to make the company more likely to be able to pay them.
- decision procedure — a procedure, as an algorithm, for determining in a finite number of steps the validity of any of a certain class of propositions.
- defense calculator — IBM 701
- delmarva peninsula — a peninsula of the northeast US, between Chesapeake Bay and the Atlantic
- departure platform — a raised area at a railway station from which passengers can board trains prior to their departing
- dermot macmurrough — ?1110–71, king of Leinster, who, by enlisting the support of the English to win back his kingdom, was responsible for the English conquest of Ireland
- descriptive clause — a relative clause that describes or supplements but is not essential in establishing the identity of the antecedent and is usually set off by commas in English. In This year, which has been dry, is bad for crops the clause which has been dry is a nonrestrictive clause.
- desiderius erasmus — Desiderius [des-i-deer-ee-uh s] /ˌdɛs ɪˈdɪər i əs/ (Show IPA), 1466?–1536, Dutch humanist, scholar, theologian, and writer.
- destruct mechanism — a mechanism that causes the destruction of a rocket or missile when activated
- developing country — a nonindustrialized poor country that is seeking to develop its resources by industrialization
- devil's paintbrush — a perennial European hawkweed (Hieracium aurantiacum) with leafless flower stalks bearing a cluster of orange-red heads: now a common weed in N U.S. and Canada
- dia de los muertos — Day of the Dead.
- diaminofluorescein — (organic compound) A fluorescein into which two amino groups have been substituted.
- diamondback turtle — any edible North American terrapin of the genus Malaclemys, esp M. terrapin, occurring in brackish and tidal waters and having diamond-shaped markings on the shell: family Emydidae
- diatomaceous earth — an unconsolidated form of diatomite
- dietary supplement — a substance taken in addition to what you eat in order to promote health
- digital multimeter — (electronics) (DMM) A peice of test equipment used for measuring voltage, current, resistance, and possibly other electircal quantities and displaying the value in number form.
- digital signatures — digital signature
- discourse analysis — the study of the rules or patterns characterizing units of connected speech or writing longer than a sentence.
- disorderly conduct — any of various petty misdemeanors, generally including nuisances, breaches of the peace, offensive or immoral conduct in public, etc.
- distress frequency — a radio frequency band reserved for emergency signals from aircraft or ships in distress.
- distributed eiffel — ["Distributed Eiffel: A Language for Programming Multi-Granular Distributed Objects on the Clouds Operating System", L. Gunaseelan et al, IEEE Conf Comp Langs, 1992].
- distributed memory — (architecture) The kind of memory in a parallel processor where each processor has fast access to its own local memory and where to access another processor's memory it must send a message via the inter-processor network. Opposite: shared memory.
- distributed system — A collection of (probably heterogeneous) automata whose distribution is transparent to the user so that the system appears as one local machine. This is in contrast to a network, where the user is aware that there are several machines, and their location, storage replication, load balancing and functionality is not transparent. Distributed systems usually use some kind of client-server organisation. Distributed systems are considered by some to be the "next wave" of computing.
- distribution class — form class
- distribution curve — the curve or line of a graph in which cumulative frequencies are plotted as ordinates and values of the variate as abscissas.
- distribution ratio — the ratio of concentrations of a solute distributed between two immiscible solvents in contact with each other, as iodine in water and chloroform
- division of labour — a system of organizing the manufacture of an article in a series of separate specialized operations, each of which is carried out by a different worker or group of workers
- dominican republic — a republic in the West Indies, occupying the E part of the island of Hispaniola. 19,129 sq. mi. (49,545 sq. km). Capital: Santo Domingo.