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18-letter words containing a, t, i, l, n

  • proprietary colony — any of certain colonies, as Maryland and Pennsylvania, that were granted to an individual or group by the British crown and that were granted full rights of self-government.
  • protocol data unit — (PDU) A packet of data passed across a network. The term implies a specific layer of the OSI seven layer model and a specific protocol.
  • pseudointellectual — a person exhibiting intellectual pretensions that have no basis in sound scholarship.
  • public corporation — a corporation, owned and operated by a government, established for the administration of certain public programs.
  • public examination — an examination, such as a GCSE exam, that is set by a central examining board
  • publicity campaign — an effort to convey information to the public
  • pulmonic airstream — a current of lung air set in motion by the respiratory muscles in the production of speech.
  • quality controller — a person responsible for checking that the goods or services produced by an organization are of an acceptable standard
  • quartz-iodine lamp — a type of tungsten-halogen lamp containing small amounts of iodine and having a quartz envelope, operating at high temperature and producing an intense light for use in car headlamps, etc
  • racial segregation — social policy: separation of races
  • ragtag and bobtail — the riffraff; rabble: The ragtag and bobtail of every nation poured into the frontier in search of gold.
  • rail rapid transit — a system of rail transit within an urban area that has exclusive right of way either below, above, or on the ground and so is capable of relatively high operating speed. Abbreviation: RRT.
  • range of stability — the angle to the perpendicular through which a vessel may be heeled without losing the ability to right itself.
  • rational operation — any of the mathematical operations of addition, subtraction, multiplication, and division.
  • regional enteritis — Crohn's disease.
  • registration plate — a plate mounted on the front and back of a motor vehicle bearing the registration number
  • reinforced plastic — plastic with fibrous matter, such as carbon fibre, embedded in it to confer additional strength
  • 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.
  • relative frequency — the ratio of the number of times an event occurs to the number of occasions on which it might occur in the same period.
  • relative minor key — a minor key that has the same key signature as a major key, but a different tonic
  • replacement engine — an engine used to replace or substitute an older or broken engine (in a vehicle, etc)
  • reprocessing plant — a plant where materials are treated in order to make them reusable
  • residential school — (in Canada) a boarding school maintained by the Canadian government for Indian and Inuit children from sparsely populated settlements
  • residual magnetism — remanence.
  • resistance plasmid — any of a group of bacterial plasmids carrying genetic information that provide resistance to antibiotic drugs: some resistance plasmids are able to transfer themselves, and hence resistance, during conjugation
  • resistance welding — welding utilizing pressure and heat that is generated in the pieces to be welded by resistance to an electric current.
  • restraining circle — any of three circles on the floor of a basketball court used for jump balls: other players must remain outside the circle during a jump ball
  • resurrection plant — a desert plant, Selaginella lepidophylla, occurring from Texas to South America, having stems that curl inward when dry.
  • retail price index — The retail price index is a list of the prices of typical goods which shows how much the cost of living changes from one month to the next.
  • revolutionary wars — American Revolution.
  • rhode island white — one of a dual-purpose American breed of chickens having white feathers and a rose comb.
  • 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.
  • rotary clothesline — an apparatus of radiating spokes that support lines on which clothes are hung to dry
  • rotational latency — (storage, hardware)   The time for the start of the required sector on a disk to appear underneath the read/write head. The worst case is where it has just passed the head when the request is received. For a disk drive with N heads per surface, rotating at R revolutions per minute, the average rotational latency will be L = 30/NR seconds. Rotational latency is one component of access time.
  • 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 martingale — martingale (def 2).
  • rural municipality — any lightly settled area in Canada lacking a local elected government and administered directly by a provincial government.
  • russian revolution — Also called February Revolution. the uprising in Russia in March, 1917 (February Old Style), in which the Czarist government collapsed and a provisional government was established.
  • safety regulations — regulations or rules that are put in place to ensure a product, event, etc, is safe and not dangerous
  • saint clare assisi — 1194–1253, Italian nun: founder of the Franciscan order of nuns.
  • sampling equipment — Sampling equipment is equipment which is used to remove small amounts of something for analysis and monitoring.
  • sampling statistic — any function of observed data, esp one used to estimate the corresponding parameter of the underlying distribution, such as the sample mean, sample variance, etc
  • saturated solution — A saturated solution is a solution in which there is so much solute that if there was any more, it would not dissolve.
  • sault sainte marie — the rapids of the St. Marys River, between NE Michigan and Ontario, Canada.
  • schwarz inequality — Also called Cauchy's inequality. the theorem that the inner product of two vectors is less than or equal to the product of the magnitudes of the vectors.
  • scripting language — a language that is used to write scripts, or executable sections of code that automate tasks.
  • seasonal promotion — Seasonal promotions are items marketed to customers at the appropriate time of year, such as coats in the winter and bathing suits in the summer.
  • seasonal variation — season-related variation
  • secretarial agency — a recruiting business which deals with jobs for secretaries
  • securities analyst — an expert who advises on investment in securities such as stocks, shares and bonds
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