18-letter words containing u, p, r, a, i, s
- microwave spectrum — a spectrum of electromagnetic radiations whose wavelengths fall in the microwave range.
- mineral supplement — a pill containing minerals that you take to improve your health
- miniature pinscher — one of a German breed of toy dogs resembling a smaller version of the Doberman pinscher, having a flat skull, a smooth coat, erect ears, and a docked tail, bred originally as a watchdog.
- mucopolysaccharide — (formerly) glycosaminoglycan.
- natural philosophy — natural science.
- nebular hypothesis — the theory that the solar system evolved from a mass of nebular matter: prominent in the 19th century following its precise formulation by Laplace.
- neuroleptanalgesia — a semiconscious nonreactive state induced by certain drug combinations, as fentanyl with droperidol.
- neurophysiological — the branch of physiology dealing with the functions of the nervous system.
- neuropsychodynamic — Of or pertaining to neuropsychodynamics.
- neuropsychological — Of or pertaining to neuropsychology, the relation or combination of brain and mind.
- nonpartisan league — a political organization of farmers, founded in North Dakota in 1915, and extending to many states west of the Mississippi, with the aim of influencing agricultural legislation in state legislatures.
- nurse practitioner — a registered nurse who has received special training for diagnosing and treating routine or minor ailments. Abbreviation: NP.
- nurse-practitioner — a registered nurse who has received special training for diagnosing and treating routine or minor ailments. Abbreviation: NP.
- optical soundtrack — the final soundtrack on a motion picture, which appears as a band of black and white serrations along a strip of film to the left of the composite print. Light is shined through the serrations and is converted to audible sound.
- outer automorphism — an automorphism that is not an inner automorphism.
- overpressurization — pressure in excess of normal atmospheric pressure, as that caused by an explosion's shock wave or created in an accelerating airplane.
- ox-tongue partisan — a shafted weapon having a long, wide, tapering blade.
- pacinian corpuscle — (sometimes lowercase) a microscopic, onionlike body consisting of layers of connective tissue wrapped around a nerve ending, located in the deep layers of skin, tendons, etc., and functioning as a sensory receptor of pressure and vibration.
- paediatric nursing — the branch of nursing concerned with the care of children
- passing-out parade — a ceremonial parade of cadets who have completed their training
- passive vocabulary — all the words, collectively, that a person can understand
- pedal steel guitar — an oblong, floor-mounted electrified guitar, usually having ten strings, fretted with a steel bar and producing a wailing sound that is modulated by use of a foot pedal.
- pemphigus vulgaris — a potentially fatal blistering skin disease, characterized by large blisters on the skin, mucous membranes of the mouth, genitals, intestines, etc, which eventually rupture and form painful denuded areas from which critical amounts of bodily protein, fluid, and blood may be lost
- percussion flaking — a method of forming a flint tool by striking flakes from a stone core with another stone or a piece of bone or wood.
- pernicious anaemia — Pernicious anaemia is a very severe blood disease.
- personal insurance — insurance on personal risk, such as car insurance, health insurance or loss of earnings insurance
- pitch-and-run shot — chip shot.
- play silly buggers — to fool around and waste time
- pleasure principle — an automatic mental drive or instinct seeking to avoid pain and to obtain pleasure.
- 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.
- predation pressure — the effect of predation upon a population, resulting in the decrease in size of that population.
- predicate calculus — predicate logic
- presidential suite — a suite of rooms, as in a hotel, suitable for a president or other head of state.
- pressure altimeter — an aneroid barometer adapted for measuring altitude by converting the indicated atmospheric pressure to altitude according to a standard relationship.
- 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.
- primus inter pares — (of males) first among equals.
- 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.
- psychotherapeutics — psychotherapy.
- pulmonary embolism — the blockage of a pulmonary artery, often by a blood clot, that stops the flow of blood to the lungs and which can result in death if untreated
- pulmonic airstream — a current of lung air set in motion by the respiratory muscles in the production of speech.