18-letter words containing u, n, a, i
- 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
- diabetes insipidus — a disorder of the pituitary gland causing excessive thirst and excretion of large quantities of dilute urine
- 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
- diazonium compound — any of a series of compounds that contain the group ArN 2 –, in which Ar represents an aryl group.
- dietary supplement — a substance taken in addition to what you eat in order to promote health
- digital humanities — (used with a singular verb) the study of literature, philosophy, etc., as facilitated by computer technology or digital media: Digital humanities uses data analysis to find patterns in large bodies of text. the set of methodologies used in such scholarship.
- digital signatures — digital signature
- discourse analysis — the study of the rules or patterns characterizing units of connected speech or writing longer than a sentence.
- dishwashing liquid — Dishwashing liquid is a thick soapy liquid which you add to hot water to clean dirty dishes.
- dispatch documents — documents sent with a parcel, etc, detailing information such as contents, delivery address, etc
- distance education — education in which students receive instruction over the Internet, from a video, etc., instead of going to school.
- distinguishability — to mark off as different (often followed by from or by): He was distinguished from the other boys by his height.
- distribution class — form class
- 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.
- double achievement — a representation of the arms of a husband beside those of his wife such that a difference of rank between them is shown.
- drainpipe trousers — trousers with very narrow legs
- dramatic monologue — a poetic form in which a single character, addressing a silent auditor at a critical moment, reveals himself or herself and the dramatic situation.
- driver's education — high-school driving classes
- ducking and diving — evasiveness
- dwarf storage unit — (humour) (DSU) An IBM term for a cupboard.
- dysfunctionalities — Plural form of dysfunctionality.
- east indian walnut — lebbek.
- eastern algonquian — a subgroup of the Algonquian language family, comprising the languages spoken aboriginally from Nova Scotia to northeastern North Carolina.
- ecumenical council — a solemn assembly in the Roman Catholic Church, convoked and presided over by the pope and composed of cardinals, bishops, and certain other prelates whose decrees, when confirmed by the pope, become binding.
- electrostatic unit — any unit that belongs to a system of electrical cgs units in which the electric constant is given the value of unity and is taken as a pure number
- entrepreneurialism — The spirit or state of acting in an entrepreneurial manner.
- epstein-barr virus — a virus belonging to the herpes family that causes infectious mononucleosis; it is also implicated in the development of Burkitt's lymphoma and Hodgkin's disease
- equinoctial circle — celestial equator
- equinoctial spring — either of the two highest spring tides that occur at the equinoxes
- equivalent circuit — an arrangement of simple electrical components that is electrically equivalent to a complex circuit and is used to simplify circuit analysis
- ethnomusicological — Relating to or pertaining to ethnomusicology.
- european community — an economic and political association of European States that came into being in 1967, when the legislative and executive bodies of the European Economic Community merged with those of the European Coal and Steel Community and the European Atomic Energy Community: subsumed into the European Union in 1993
- evolution strategy — (ES) A kind of evolutionary algorithm where individuals (potential solutions) are encoded by a set of real-valued "object variables" (the individual's "genome"). For each object variable an individual also has a "strategy variable" which determines the degree of mutation to be applied to the corresponding object variable. The strategy variables also mutate, allowing the rate of mutation of the object variables to vary. An ES is characterised by the population size, the number of offspring produced in each generation and whether the new population is selected from parents and offspring or only from the offspring. ES were invented in 1963 by Ingo Rechenberg, Hans-Paul Schwefel at the Technical University of Berlin (TUB) while searching for the optimal shapes of bodies in a flow.
- executive chairman — the most senior internal position within a company, combining the duties of chairman and chief executive
- exhaustive testing — (programming) Executing a program with all possible combinations of inputs or values for program variables.
- eyewitness account — a description given by someone who was present at an event
- fast-food industry — the industry surrounding fast-food restaurants
- feeping creaturism — /fee'ping kree"ch*r-izm/ A deliberate spoonerism for creeping featurism, meant to imply that the system or program in question has become a misshapen creature of hacks. This term isn"t really well defined, but it sounds so neat that most hackers have said or heard it. It is probably reinforced by an image of terminals prowling about in the dark making their customary noises.
- fettuccine alfredo — fettuccine in cream sauce with grated Parmesan cheese.
- fibonacci sequence — (mathematics) The infinite sequence of numbers beginning 1, 1, 2, 3, 5, 8, 13, ... in which each term is the sum of the two terms preceding it. The ratio of successive Fibonacci terms tends to the golden ratio, namely (1 + sqrt 5)/2.
- fibrocartilaginous — a type of cartilage having a large number of fibers.
- fissure of rolando — central sulcus.
- flash butt welding — a method of welding metal edge-to-edge with a powerful electric flash followed by the application of pressure.
- floating underflow — underflow
- formal equivalence — the relation that holds between two open sentences when their universal closures are materially equivalent
- foundation garment — an undergarment, as a girdle or corset, worn by women to support or give shape to the contours of the body.
- foundling hospital — an institutional home for foundlings.