18-letter words containing a, r, c, n, e, t

software backplane — (programming, tool) A CASE framework from Atherton.
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.
sound spectrograph — an electronic device for recording a sound spectogram.
southern cameroons — German Kamerun. a region in W Africa: a German protectorate 1884–1919; divided in 1919 into British and French mandates.
specimen signature — a signature to be compared to an original signature in order to verify someone's identity
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 triangle — a triangle formed by arcs of great circles of a sphere.
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. 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.
standard schnauzer — schnauzer.
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.
stationary bicycle — an exercise bike
store launch event — A store launch event is a special event, which publicizes the opening of a new store and at which discounts and free samples may be offered.
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.
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
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
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.
symphony orchestra — a large orchestra composed of wind, string, and percussion instruments and organized to perform symphonic compositions.
take out insurance — take out insurance against something
teacher evaluation — the process of vetting teachers to maintain teaching standards
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.
tectorial membrane — membrane in the inner ear that covers the organ of Corti
tender loving care — considerate and kindly care, as of someone who is ill, upset, etc
tertiary education — education, following secondary education at a school, at a college or university
tetrachloromethane — carbon tetrachloride.
the american dream — the notion that the American social, economic, and political system makes success possible for every individual
the dark continent — a term for Africa when it was relatively unexplored
the electronic age — the electronic age began when electronic equipment, including computers came into use
the french riviera — the Mediterranean coastal region of France from Cannes eastward to Italy
the general public — the people in a society; people in general
the hunger marches — a number of processions by unemployed workers in the 1930s to protest against unemployment and deprivation
the north atlantic — the northern part of the Atlantic Ocean, especially the waters separating North America and Europe
the-dark-continent — Africa: so called, especially during the 19th century, because little was known about it.
thermal efficiency — the ratio of the work output of a heat engine to the heat input expressed in the same units of energy.
thermonuclear bomb — hydrogen bomb.
thioarsenious acid — any of a group of hypothetical acids, H3AsS3, HAsS2, and H4As2S5, known only in the forms of their salts
threatened species — a species likely, in the near future, to become an endangered species within all or much of its range.
three-cornered hat — a triangular shaped hat which was popular in the 17th and 18th centuries; its turned up brim formed a gutter for catching rain
to all appearances — apparently
to cast aspersions — If you cast aspersions on someone or something, you suggest that they are not very good in some way.
to scrape a living — If you say that someone scrapes a living or scratches a living, you mean that they manage to earn enough to live on, but it is very difficult. In American English, you say they scrape out a living or scratch out a living.
traffic controller — a person whose job is to control the flow of air traffic
transcendental ego — (in Kantian epistemology) that part of the self that is the subject and never the object.
translation agency — an organization that provide people to translate speech or writing into a different language
transrectification — rectification occurring in one circuit as a result of the application of an alternating voltage to another circuit.

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