18-letter words containing s, i, t, u, a, o
- passing modulation — a modulation of a temporary nature.
- passing-out parade — a ceremonial parade of cadets who have completed their training
- physical education — systematic instruction in sports, exercises, and hygiene given as part of a school or college program.
- pigmy hippopotamus — a related but smaller animal, Choeropsis liberiensis
- pitch-and-run shot — chip shot.
- political question — a question regarded by the courts as being a matter to be determined by another department of government rather than of law and therefore one with which they will not deal, as the recognition of a foreign state.
- population density — ratio: inhabitants to area
- population figures — population totals; statistics relating to the size of populations
- portuguese guinean — of or relating to Portuguese Guinea, a former name for Guinea-Bissau, or its inhabitants
- post-revolutionary — of, pertaining to, characterized by, or of the nature of a revolution, or a sudden, complete, or marked change: a revolutionary junta.
- potassium chlorate — a white or colorless, crystalline, water-soluble, poisonous solid, KClO 3 , used chiefly as an oxidizing agent in the manufacture of explosives, fireworks, matches, bleaches, and disinfectants.
- potassium chloride — a white or colorless, crystalline, water-soluble solid, KCl, used chiefly in the manufacture of fertilizers and mineral water, and as a source of other potassium compounds.
- potassium fluoride — a white, crystalline, hygroscopic, toxic powder, KF, used chiefly as an insecticide, a disinfectant, and in etching glass.
- potassium myronate — sinigrin.
- potassium sulphate — a soluble substance usually obtained as colourless crystals of the decahydrate: used in making glass and as a fertilizer. Formula: K2SO4
- predation pressure — the effect of predation upon a population, resulting in the decrease in size of that population.
- presumption of law — a presumption based upon a policy of law or a general rule and not upon the facts or evidence in an individual case.
- prison authorities — the people in charge of running a prison
- procrustean string — (programming) A fixed-length string. If a string value is too long for the allocated space, it is truncated to fit; and if it is shorter, the empty space is padded, usually with space characters. This is an allusion to Procrustes, a legendary robber of ancient Attica. He bound his victims to a bed, and if they were shorter than the bed, he stretched their limbs until they would fit; if their limbs were longer, he lopped them off.
- property insurance — insurance coverage for land and housing
- provascular tissue — procambium.
- pseudo-anarchistic — a person who advocates or believes in anarchy or anarchism.
- pseudo-socialistic — of or relating to socialists or socialism.
- pseudo-symptomatic — pertaining to a symptom or symptoms.
- pseudoappendicitis — inflammation of the vermiform appendix.
- pseudointellectual — a person exhibiting intellectual pretensions that have no basis in sound scholarship.
- psychotherapeutics — psychotherapy.
- pulmonic airstream — a current of lung air set in motion by the respiratory muscles in the production of speech.
- pygmy hippopotamus — a small hippopotamus, Choeropsis liberiensis, of forests and swamps in western Africa.
- quality of service — (communications, networking) (QoS) The performance properties of a network service, possibly including throughput, transit delay, priority. Some protocols allow packets or streams to include QoS requirements.
- 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
- resurrection plant — a desert plant, Selaginella lepidophylla, occurring from Texas to South America, having stems that curl inward when dry.
- resuscitation room — an intensive care unit
- revolutionary wars — American Revolution.
- 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.
- russian revolution — Also called February Revolution. the uprising in Russia in March, 1917 (February Old Style), in which the Czarist government collapsed and a provisional government was established.
- safety regulations — regulations or rules that are put in place to ensure a product, event, etc, is safe and not dangerous
- san juan mountains — a mountain range in SW Colorado and N New Mexico: part of the Rocky Mountains. Highest peak: Uncompahgre Peak, 4363 m (14 314 ft)
- 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.
- saturation bombing — intense area bombing intended to destroy everything in the target area.
- second triumvirate — the coalition and joint rule of the Roman Empire by Antony, Lepidus, and Octavian, begun in 43 bc
- secondary industry — manufacturing, services, etc.
- self-actualization — the achievement of one's full potential through creativity, independence, spontaneity, and a grasp of the real world.
- self-instructional — pertaining to or constituting learning materials and conditions arranged so that students can proceed to learn on their own with little or no supervision.
- self-justification — the act or fact of justifying oneself, especially of offering excessive reasons, explanations, excuses, etc., for an act, thought, or the like.
- self-preoccupation — the state of being preoccupied.
- sexual intercourse — genital contact, especially the insertion of the penis into the vagina followed by orgasm; coitus; copulation.