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18-letter words containing r, i, g, a, t, o

  • radiometric dating — any method of determining the age of earth materials or objects of organic origin based on measurement of either short-lived radioactive elements or the amount of a long-lived radioactive element plus its decay product.
  • radius of gyration — the distance from an axis at which the mass of a body may be assumed to be concentrated and at which the moment of inertia will be equal to the moment of inertia of the actual mass about the axis, equal to the square root of the quotient of the moment of inertia and the mass.
  • ragtag and bobtail — the riffraff; rabble: The ragtag and bobtail of every nation poured into the frontier in search of gold.
  • rain cats and dogs — water that is condensed from the aqueous vapor in the atmosphere and falls to earth in drops more than 1/50 inch (0.5 mm) in diameter. Compare drizzle (def 6).
  • range of stability — the angle to the perpendicular through which a vessel may be heeled without losing the ability to right itself.
  • reciprocating pump — A reciprocating pump is a pump which uses a backward and forward movement to move a fluid.
  • reduction strategy — (theory)   An algorithm for deciding which redex(es) to reduce next. Different strategies have different termination properties in the presence of recursive functions or values. See string reduction, normal order reduction, applicative order reduction, parallel reduction
  • refrigerated lorry — a lorry which is chilled in the back as for storing food
  • regional enteritis — Crohn's disease.
  • registered company — a company which has officially registered its business
  • registration plate — a plate mounted on the front and back of a motor vehicle bearing the registration number
  • relational algebra — (database, theory)   A family of algebra with a well-founded semantics used for modelling the data stored in relational databases, and defining queries on it. The main operations of the relational algebra are the set operations (such as union, intersection, and cartesian product), selection (keeping only some lines of a table) and the projection (keeping only some columns). The relational data model describes how the data is structured.
  • reprocessing plant — a plant where materials are treated in order to make them reusable
  • retrograde amnesia — a memory disorder characterized by an inability to remember events or experiences that occurred before a significant point in time.
  • rhyming dictionary — a specialist dictionary organized by the final sounds of words, used to write poetry
  • right-to-work laws — a state law making it illegal to refuse employment to a person for the sole reason that he or she is not a union member.
  • rolling resistance — The rolling resistance of a wheel or ball is its resistance to movement caused by friction between it and the surface it is rolling on.
  • roman congregation — any of the executive departments of the Curia Romana as the administration of the Roman Catholic Church.
  • rotational molding — a method for molding hollow plastic objects by placing finely divided particles in a hollow mold that is rotated about two axes, exposing it to heat and then to cold.
  • running commentary — non-stop description of sth
  • safety regulations — regulations or rules that are put in place to ensure a product, event, etc, is safe and not dangerous
  • saint george's day — April 23, celebrated in parts of the British Commonwealth in honor of the patron saint of Britain and especially in New Zealand as a bank holiday.
  • saturation bombing — intense area bombing intended to destroy everything in the target area.
  • self-glorification — a glorified or more splendid form of something.
  • self-gratification — the act of pleasing or satisfying oneself, especially the gratifying of one's own impulses, needs, or desires.
  • self-interrogation — the act of interrogating; questioning.
  • shipping container — a large, strong container, usually of metal, used to store goods in during shipment
  • shugart associates — (company)   The disk drive company, founded by Alan F. Shugart, which developed SCSI. Alan left Shugart Associates in 1974 [did he quit or was he fired?]. Shugart Associates was bought, and eventually shut down by Xerox.
  • shunting operation — an operation in which rail coaches are manoeuvred
  • ski-mountaineering — a combination of the sports of skiing and mountaineering, for example by climbing up a mountain then skiing down it
  • skin friction drag — aerodynamic resistance or drag due to the contact of moving air with the surface of an airplane, a glider, etc.
  • societal marketing — marketing that takes into account society's long-term welfare
  • something to spare — a surplus of something
  • spectroheliography — the process of obtaining an image of the sun in light of a particular wavelength, such as calcium or hydrogen, showing the distribution of the element over the surface and in the solar atmosphere, using a spectroheliograph
  • spherical geometry — the branch of geometry that deals with figures on spherical surfaces.
  • standard of living — a grade or level of subsistence and comfort in everyday life enjoyed by a community, class, or individual: The well-educated generally have a high standard of living.
  • stirling's formula — a relation that approximates the value of n factorial (n!), expressed as .
  • strait of magellan — a strait between the mainland of S South America and Tierra del Fuego, linking the S Pacific with the S Atlantic. Length: 600 km (370 miles). Width: up to 32 km (20 miles)
  • strathclyde region — a former local government region in W Scotland: formed in 1975 from Glasgow, Renfrewshire, Lanarkshire, Buteshire, Dunbartonshire, and parts of Argyllshire, Ayrshire, and Stirlingshire; replaced in 1996 by the council areas of Glasgow, Renfrewshire, East Renfrewshire, Inverclyde, North Lanarkshire, South Lanarkshire, Argyll and Bute, East Dunbartonshire, West Dunbartonshire, North Ayrshire, South Ayrshire, and East Ayrshire
  • strong interaction — the interaction between gluons and between gluons and quarks that is responsible for the strong force.
  • sugarloaf mountain — a mountain in SE Brazil in Rio de Janeiro, at the entrance to Guanabara Bay. 1280 feet (390 meters).
  • super giant slalom — a slalom race in which the course is longer and has more widely spaced gates than in a giant slalom.
  • supporting actress — an actress playing a supporting role
  • supraorbital ridge — browridge.
  • sustaining program — a radio or television program without a commercial sponsor.
  • system-programming — a program, as an operating system, compiler, or utility program, that controls some aspect of the operation of a computer (opposed to application program).
  • tender loving care — considerate and kindly care, as of someone who is ill, upset, etc
  • the electronic age — the electronic age began when electronic equipment, including computers came into use
  • the grand national — an annual steeplechase run at Aintree, Liverpool, since 1839
  • the major rogation — April 25, observed by Christians as a day of solemn supplication for the harvest and marked by processions, special prayers, and blessing of the crops
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