18-letter words containing r, u, d, a, s
- diaminofluorescein — (organic compound) A fluorescein into which two amino groups have been substituted.
- diatomaceous earth — an unconsolidated form of diatomite
- dietary supplement — a substance taken in addition to what you eat in order to promote health
- digital signatures — digital signature
- discourse analysis — the study of the rules or patterns characterizing units of connected speech or writing longer than a sentence.
- 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
- double-page spread — two pages treated as one in a publication, with images or text extending across the binding
- drainpipe trousers — trousers with very narrow legs
- driver's education — high-school driving classes
- due process of law — the administration of justice in accordance with established rules and principles
- dwarf storage unit — (humour) (DSU) An IBM term for a cupboard.
- elementary student — primary school pupil
- engelbart, douglas — Douglas Engelbart
- established church — a Church that is officially recognized as a national institution, esp the Church of England
- euclid's algorithm — (algorithm) (Or "Euclidean Algorithm") An algorithm for finding the greatest common divisor (GCD) of two numbers. It relies on the identity gcd(a, b) = gcd(a-b, b) To find the GCD of two numbers by this algorithm, repeatedly replace the larger by subtracting the smaller from it until the two numbers are equal. E.g. 132, 168 -> 132, 36 -> 96, 36 -> 60, 36 -> 24, 36 -> 24, 12 -> 12, 12 so the GCD of 132 and 168 is 12. This algorithm requires only subtraction and comparison operations but can take a number of steps proportional to the difference between the initial numbers (e.g. gcd(1, 1001) will take 1000 steps).
- fast-food industry — the industry surrounding fast-food restaurants
- federal funds rate — The federal funds rate is the overnight rate between banks.
- first class module — (programming) A module that is a first class data object of the programming language, e.g. a record containing functions. In a functional language, it is standard to have first class programs, so program building blocks can have the same status.
- fissure of rolando — central sulcus.
- fixed-focus camera — a camera with an unadjustable focal length and with a relatively large depth of field.
- frederick douglass — Frederick, 1817–95, U.S. ex-slave, abolitionist, and orator.
- funding operations — the conversion of government floating stock or short-term debt into holdings of long-term bonds
- gamma distribution — a continuous two-parameter distribution from which the chi-square and exponential distributions are derived, written Gamma (α. β), where α and β are greater than zero, and defined in terms of the gamma function
- gas-discharge tube — any tube in which an electric discharge takes place through a gas
- gastroduodenostomy — See under gastroenterostomy.
- gettysburg address — the notable short speech made by President Lincoln on November 19, 1863, at the dedication of the national cemetery at Gettysburg, Pa.
- giuseppe garibaldi — Giuseppe [juh-sep-ee;; Italian joo-zep-pe] /dʒəˈsɛp i;; Italian dʒuˈzɛp pɛ/ (Show IPA), 1807–82, Italian patriot and general.
- grandfather clause — U.S. History. a clause in the constitutions of some Southern states after 1890 intended to permit whites to vote while disfranchising blacks: it exempted from new literacy and property qualifications for voting those men entitled to vote before 1867 and their lineal descendants.
- granulated surface — a roughened surface
- guidance counselor — advisor in schools
- gum digger's spear — a long steel probe used by gum diggers digging for kauri gum
- handlebar mustache — A handlebar mustache is a long thick mustache with curled ends.
- haud your wheesht! — be silent! hush!
- head and shoulders — If you say that someone or something stands head and shoulders above other people or things, you mean that they are a lot better than them.
- headquarters staff — the people who work at the headquarters of an organization
- hemidemisemiquaver — a sixty-fourth note.
- honour moderations — (at Oxford University) the first public examination, in which candidates are placed into one of three classes of honours
- hundred years' war — the series of wars between England and France, 1337–1453, in which England lost all its possessions in France except Calais.
- hydrofluorocarbons — Plural form of hydrofluorocarbon.
- hyposulfurous acid — an acid, H 2 S 2 O 4 , next in a series below sulfurous acid, known only in solution or in the form of its salts.
- ifs, ands, or buts — a supposition; uncertain possibility: The future is full of ifs.
- indentured servant — a person who came to America and was placed under contract to work for another over a period of time, usually seven years, especially during the 17th to 19th centuries. Generally, indentured servants included redemptioners, victims of religious or political persecution, persons kidnapped for the purpose, convicts, and paupers.
- industrial diamond — a small often synthetic diamond, valueless as a gemstone, used in cutting tools, abrasives, etc
- industrial disease — occupational disease (def 1).
- industrial dispute — disagreement between workers and managers
- industrial hygiene — the science that assesses, controls, and prevents occupational factors or sources of stress in the workplace that may significantly affect the health and well-being of employees or of the community in general
- industrial vehicle — a vehicle designed for use in industry
- instrument landing — an aircraft landing accomplished by use of gauges on the instrument panel and ground-based radio equipment, with limited reference to outside visual signals.