18-letter words containing a, t, s

southeast by south — a point on the compass 11°15′ south of southeast. Abbreviation: SEbS.
southern cameroons — German Kamerun. a region in W Africa: a German protectorate 1884–1919; divided in 1919 into British and French mandates.
southern rhodesian — a former name (until 1964) of Zimbabwe (def 1).
sow dragon's teeth — to take some action that is intended to prevent strife or trouble but that actually brings it about
spaghetti junction — an interchange, usually between motorways, in which there are a large number of underpasses and overpasses and intersecting roads used by a large volume of high-speed traffic
spare-part surgery — surgical replacement of defective or damaged organs by transplant or insertion of artificial devices
special assessment — a tax levied by a local government on private property to pay the cost of local public improvements, as sidewalk construction or sewage disposal, that are of general benefit to the property taxed.
special collection — a collection of materials segregated from a general library collection according to form, subject, age, condition, rarity, source, or value.
special prosecutor — (formerly) an independent counsel.
special relativity — the state or fact of being relative.
specialist teacher — a teacher with expertise in working with children with special educational needs, such as dyslexia
specimen signature — a signature to be compared to an original signature in order to verify someone's identity
specrate_base_fp92 — (benchmark) A variant of SPECrate_fp92 that reports "baseline" results, using stricter run rules.
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
spectropolarimeter — an instrument for determining the extent to which plane-polarized light of various wavelengths is rotated by certain solutions, consisting of a combination of a spectroscope and a polarimeter.
spectropolariscope — an instrument combining the functions of a spectroscope with those of a polariscope.
sperry corporation — (company) The company which merged with the Burroughs Corporation to form Unisys Corporation. Divisions included Sperry Univac, Sperry Flight Systems, and others. Some of these were sold off after the merger.
spherical geometry — the branch of geometry that deals with figures on spherical surfaces.
spherical triangle — a triangle formed by arcs of great circles of a sphere.
spike-tooth harrow — a harrow equipped with straight teeth on horizontal bars, usually employed to smooth and level plowed soil or seedbeds for planting or sowing.
spin stabilization — a technique by which a bullet, rocket, etc, is made to spin around its longitudinal axis to assist it in maintaining a steady flight path
spinal anaesthesia — anaesthesia of the lower half of the body produced by injecting an anaesthetic beneath the arachnoid membrane surrounding the spinal cord
spirits of ammonia — a 10% solution of ammonia in alcohol
spotted flycatcher — a European woodland songbird, Muscicapa striata, with a greyish-brown streaked plumage: family Muscicapidae (Old World flycatchers)
st. andrew's cross — a low evergreen shrub, Ascyrum hypericoides, native to temperate and subtropical America, having flowers in clusters of three: often cultivated.
st. james's palace — a palace in London, England: the royal residence from the time of Henry VIII until the accession of Victoria.
st. lawrence river — a river in SE Canada, flowing NE from Lake Ontario, forming part of the boundary between New York and Ontario, and emptying into the Gulf of St. Lawrence. 760 miles (1225 km) long.
st. peter's square — a square surrounded by colonnades, forming a boundary of and an entrance to Vatican City, leading to St. Peter's: designed by Giovanni Bernini and built during the 17th century.
stand at attention — military: stand straight
stand confessed as — to be revealed or admitted as
stand one's ground — the solid surface of the earth; firm or dry land: to fall to the ground.
stand-by generator — an electrical system which operates automatically in case the usual system malfunctions
stand-by passenger — someone who buys a (usually cheaper) ticket, if they are still available, on a plane just before it is about to leave rather than booking in advance
stand/wait in line — When people stand in line or wait in line, they stand one behind the other in a line, waiting their turn for something.
standard amenities — the sanitary facilities recommended for all dwellings by the housing law: a fixed bath or shower, wash-hand basin, and sink, all supplied with hot and cold water, and a flush toilet
standard deviation — a measure of dispersion in a frequency distribution, equal to the square root of the mean of the squares of the deviations from the arithmetic mean of the distribution.
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.
standard schnauzer — schnauzer.
standing committee — a permanent committee, as of a legislature, society, etc., intended to consider all matters pertaining to a designated subject.
standoff insulator — a type of insulator that supports an electrical conductor at a distance from other elements or surfaces.
state of emergency — If a government or other authority declares a state of emergency in an area, it introduces special measures such as increased powers for the police or army, usually because of civil disorder or because of a natural disaster such as an earthquake.
state of the union — A State of the Union speech or address is a speech, given once a year, in which the president of the United States talks about the current political issues that affect the country as a whole and about his plans for the year ahead.
statement of claim — law: first pleading
statements of case — the formal written statements presented alternately by the plaintiff and defendant in a lawsuit setting out the respective matters relied upon
static electricity — a stationary electric charge built up on an insulating material.
station management — (networking) (SMT) Station Management One of the 4 key FDDI component layers. SMT is an overlay function that handles the management of the FDDI ring. It handles neighbor identification, fault detection and reconfiguration, insertion and de-insertion from the ring, and traffic statistics monitoring.
station-to-station — (of a long-distance telephone call) chargeable upon speaking with anyone at the number called: a station-to-station call to his home in Dallas.
stationary bicycle — an exercise bike
statistical tables — tables showing the values of the cumulative distribution functions, probability functions, or probability density functions of certain common distributions for different values of their parameters, and used esp to determine whether or not a particular statistical result exceeds the required significance level
status asthmaticus — a severe attack of asthma in which the patient may die from respiratory failure if not treated with inhaled oxygen or other appropriate measures

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