18-letter words containing a, s, o, u, n, d

pull one's head in — the upper part of the body in humans, joined to the trunk by the neck, containing the brain, eyes, ears, nose, and mouth.
radiation exposure — exposure to radiant energy or to the particles emitted in the transfer of radiant energy, esp the particles and gamma rays emitted in nuclear decay; exposure to radioactive substances
radiation pressure — the pressure exerted on a surface by electromagnetic radiation or by sound waves.
radius of gyration — the distance from an axis at which the mass of a body may be assumed to be concentrated and at which the moment of inertia will be equal to the moment of inertia of the actual mass about the axis, equal to the square root of the quotient of the moment of inertia and the mass.
reduction strategy — (theory) An algorithm for deciding which redex(es) to reduce next. Different strategies have different termination properties in the presence of recursive functions or values. See string reduction, normal order reduction, applicative order reduction, parallel reduction
russian federation — a republic extending from E Europe to N and W Asia. 6,593,000 sq. mi. (17,076,000 sq. km). Capital: Moscow.
sao caetano do sul — a city in SE Brazil, SE of São Paulo.
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.
second triumvirate — the coalition and joint rule of the Roman Empire by Antony, Lepidus, and Octavian, begun in 43 bc
secondary consumer — (in the food chain) a carnivore that feeds only upon herbivores.
secondary industry — manufacturing, services, etc.
simone de beauvoir — Simone [see-mawn] /siˈmɔn/ (Show IPA), (Lucie Ernestine Marie Bertrand) 1908–86, French playwright, novelist, and essayist.
small outline dimm — (storage) (SO-DIMM) A smaller kind of DIMM with 72 pins (supporting 32-bit transfers) or 144 pins (64-bit transfers). Regular DIMMs have 168 pins and support 64-bit transfers. Being roughly half the size of the regular DIMM, SO-DIMMs are often used in notebook computers.
sodium bicarbonate — a white, crystalline, water-soluble solid, in powder or granules, NaHCO 3 , usually prepared by the reaction of soda ash with carbon dioxide or obtained from the intermediate product of the Solvay process by purification: used chiefly in the manufacture of sodium salts, baking powder, and beverages, as a laboratory reagent, as a fire extinguisher, and in medicine as an antacid.
sodium thiocyanate — a white powder or colorless, deliquescent crystals, NaSCN, used chiefly in organic synthesis and in medicine in the treatment of hypertension.
solid-fuel heating — heating that uses solid fuel, such as coal or coke
sound and the fury — a novel (1929) by William Faulkner.
sound spectrograph — an electronic device for recording a sound spectogram.
southampton island — an island in N Canada, in the Northwest Territories at the entrance to Hudson Bay. 19,100 sq. mi. (49,470 sq. km).
southern rhodesian — a former name (until 1964) of Zimbabwe (def 1).
spackling compound — spackle
stand one's ground — the solid surface of the earth; firm or dry land: to fall to the ground.
standoff insulator — a type of insulator that supports an electrical conductor at a distance from other elements or surfaces.
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.
subsidiary company — a company whose controlling interest is owned by another company.
summary proceeding — a mode of trial authorized by statute to be held before a judge without the usual full hearing.
sun-dried tomatoes — tomatoes that have been dried or preserved by exposure to the sun
sutton-in-ashfield — a market town in N central England, in W Nottinghamshire. Pop: 41 951 (2001)
thioarsenious acid — any of a group of hypothetical acids, H3AsS3, HAsS2, and H4As2S5, known only in the forms of their salts
to speak your mind — If you speak your mind, you say firmly and honestly what you think about a situation, even if this may offend or upset people.
tristan und isolde — a music drama (composed, 1857–59; première, 1865) by Richard Wagner.
turn one's hand to — the terminal, prehensile part of the upper limb in humans and other primates, consisting of the wrist, metacarpal area, fingers, and thumb.
ultrasonic welding — the use of high-energy vibration of ultrasonic frequency to produce a weld between two components which are held in close contact
ultrasound scanner — a device used to examine an internal bodily structure by the use of ultrasonic waves, esp for the diagnosis of abnormality in a fetus
under (one's) seal — in a document authenticated by one's seal
under one's breath — the air inhaled and exhaled in respiration.
under the aegis of — guided or protected by
under-compensation — to compensate or pay less than is fair, customary, or expected.
under-registration — the act of registering.
united nations day — the anniversary of the United Nations on October 24, marking its founding in 1945.
urban homesteading — homesteading (def 2).
video surveillance — a system of monitoring activity in an area or building using a television system in which signals are transmitted from a television camera to the receivers by cables or telephone links forming a closed circuit
wrongful dismissal — the act of making someone redundant for reasons which are illegal or unjust

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