18-letter words containing a, i, r, s, g, n
- 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
- retrograde amnesia — a memory disorder characterized by an inability to remember events or experiences that occurred before a significant point in time.
- risk based testing — (testing) Testing based on identification of potential risks (or "candidate risks"), which should be analysed by the project stakeholder or which might appear during the project's development.
- 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.
- 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.
- sampling frequency — sample rate
- saturation bombing — intense area bombing intended to destroy everything in the target area.
- scripting language — a language that is used to write scripts, or executable sections of code that automate tasks.
- seafloor spreading — a process in which new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out.
- secondary diagonal — a diagonal line or plane.
- secondary offering — the sale of a large block of outstanding stock off the floor of an exchange, usually by a major stockholder.
- secretarial agency — a recruiting business which deals with jobs for secretaries
- security agreement — business: contract
- self-deprecatingly — in a self-deprecating manner
- self-disparagement — the act of disparaging.
- 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-incriminating — serving to incriminate oneself or to expose oneself to prosecution: self-incriminating testimony.
- self-interrogation — the act of interrogating; questioning.
- self-raising flour — flour with baking powder
- self-tapping screw — a screw designed to tap its corresponding female thread as it is driven.
- self-understanding — mental process of a person who comprehends; comprehension; personal interpretation: My understanding of the word does not agree with yours.
- shipping container — a large, strong container, usually of metal, used to store goods in during shipment
- 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.
- snake in the grass — a treacherous person, especially one who feigns friendship.
- social bookmarking — the practice of saving bookmarked Web pages to a public website as a way to share the links with other Internet users: Social bookmarking is a tool that allows you to add tags and comments to your bookmarks.
- social engineering — the application of the findings of social science to the solution of actual social problems.
- societal marketing — marketing that takes into account society's long-term welfare
- something to spare — a surplus of something
- specimen signature — a signature to be compared to an original signature in order to verify someone's identity
- spherical triangle — a triangle formed by arcs of great circles of a sphere.
- spread one's wings — to make full use of one's abilities
- 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.
- submaxillary gland — submandibular gland.
- sugarloaf mountain — a mountain in SE Brazil in Rio de Janeiro, at the entrance to Guanabara Bay. 1280 feet (390 meters).
- summary proceeding — a mode of trial authorized by statute to be held before a judge without the usual full hearing.
- 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
- surgical appliance — a specialized device used by somebody to relieve a particular medical condition
- sustaining program — a radio or television program without a commercial sponsor.
- swarm intelligence — the collective behaviour of a group of animals, esp social insects such as ants, bees, and termites, that are each following very basic rules
- sweptwing aircraft — an aircraft which has wings that are swept (usually) backwards
- sympathetic string — a thin wire string, as in various obsolete musical instruments, designed to vibrate sympathetically with the bowed or plucked strings to reinforce the sound.