18-letter words containing s, c, i, a, t
- solvent extraction — Solvent extraction is the separation of a particular substance from a mixture by dissolving that substance in a solvent that will dissolve it, but which will not dissolve any other substance in the mixture.
- 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
- 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
- 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.
- 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.
- standing committee — a permanent committee, as of a legislature, society, etc., intended to consider all matters pertaining to a designated subject.
- statement of claim — law: first pleading
- static electricity — a stationary electric charge built up on an insulating material.
- 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
- status epilepticus — a condition in which repeated epileptic seizures occur without the patient gaining consciousness between them. If untreated for a prolonged period it can lead to long-term disability or death
- statutory sick pay — the pay an employee is legally entitled to when sick
- stepping-off place — jumping-off place (def 2).
- stinking chamomile — mayweed.
- stoichiometrically — of or relating to stoichiometry.
- stokely carmichael — Hoagland Howard [hohg-luh nd] /ˈhoʊg lənd/ (Show IPA), ("Hoagy") 1899–1981, U.S. songwriter and musician.
- 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
- stratigraphic trap — A stratigraphic trap is a rock formation that contains hydrocarbons and is sealed by other rock formations.
- street certificate — a certificate showing ownership of a specified number of shares of stock: endorsed by the owner and guaranteed by a broker, it may be traded without formal transfer on the books of the corporation issuing the stock.
- strong interaction — the interaction between gluons and between gluons and quarks that is responsible for the strong force.
- sub-classification — to arrange in subclasses.
- subatomic particle — physics:
- subordinate clause — a clause that modifies the principal clause or some part of it or that serves a noun function in the principal clause, as when she arrived in the sentence I was there when she arrived or that she has arrived in the sentence I doubt that she has arrived.
- subsistence farmer — a farmer who consumes most of the produce he grows, leaving little or nothing to be marketed
- substitute teacher — educator: replaces sb temporarily
- supporting actress — an actress playing a supporting role
- 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
- swedish gymnastics — a system of passive and active exercising of muscles and joints
- sweptwing aircraft — an aircraft which has wings that are swept (usually) backwards
- sympathetic strike — sympathy strike.
- 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.
- systematic phoneme — a phonological unit in generative phonology representing an underlying form that takes into account the relationship between phonological patterns and morphological variation, as the unit underlying the second vowel in both derive and derivative.
- take out insurance — take out insurance against something
- tale of two cities — a historical novel (1859) by Dickens.
- teaching assistant — a graduate student in a college or university who is the recipient of a teaching fellowship. Abbreviation: TA.
- technical reserves — Technical reserves are amounts of money set aside to pay for underwriting liabilities.
- technical sergeant — a noncommissioned officer ranking below a master sergeant and above a staff sergeant.
- telecommunications — Sometimes, telecommunication. (used with a singular verb) the transmission of information, as words, sounds, or images, usually over great distances, in the form of electromagnetic signals, as by telegraph, telephone, radio, or television.
- television cabinet — a cabinet on which a television set is placed or in which it is encased