17-letter words containing r, a, u, s
- mount robson park — a national park in the Rocky Mountains of E British Columbia, Canada.
- multidisciplinary — composed of or combining several usually separate branches of learning or fields of expertise: a multidisciplinary study of the 18th century.
- multimillionaires — Plural form of multimillionaire.
- mundane astrology — the astrology of worldly events, in contrast to the astrology of the individual: used especially in interpretations and forecasts involving politics, the stock market, weather, and disasters.
- munitions factory — a factory where munitions are made
- muscle dysmorphia — a mental disorder primarily affecting males, characterized by obsessions about a perceived lack of muscularity, leading to compulsive exercising, use of anabolic steroids, etc. Compare body dysmorphic disorder.
- musical interlude — an interval in a play, event or occasion during which music is played
- mustard and cress — Mustard and cress is very young mustard plants and cress plants grown together and eaten in salad.
- naked singularity — an infinitely dense point mass without a surrounding black hole
- narrow-shouldered — having shoulders which do not extend very far from the neck; not broad-shouldered
- nasolacrimal duct — a membranous canal extending from the lacrimal sac to the nasal cavity, through which tears are discharged into the nose.
- national security — defence of a country
- natural harmonics — harmonics of a note produced on a stringed instrument by lightly touching an open or unstopped sounded string.
- natural resources — a naturally occurring source of wealth, as land or water.
- natural selection — the process by which forms of life having traits that better enable them to adapt to specific environmental pressures, as predators, changes in climate, or competition for food or mates, will tend to survive and reproduce in greater numbers than others of their kind, thus ensuring the perpetuation of those favorable traits in succeeding generations.
- natural-resources — a naturally occurring source of wealth, as land or water.
- nervous breakdown — (not in technical use) any disabling mental disorder requiring treatment.
- net present value — an assessment of the long-term profitability of a project made by adding together all the revenue it can be expected to achieve over its whole life and deducting all the costs involved, discounting both future costs and revenue at an appropriate rate
- neurofibromatosis — a dominantly inherited genetic disorder characterized by flat brown patches on the skin, neurofibromas of the skin and internal organs, and in some cases skeletal deformity.
- neuropsychiatrist — A medical doctor specializing in neuropsychiatry; a medical doctor dealing with disorders that have both neurological and psychiatric features.
- neurotransmission — the transmission of a nerve impulse across a synapse.
- neurotransmissive — Relating to neurotransmission.
- neurotransmitters — Plural form of neurotransmitter.
- newspaper cutting — clipping from a news publication
- nicholas bourbaki — the pseudonym of a group of mainly French mathematicians that, since 1939, has been producing a monumental work on advanced mathematics, Eléments de Mathématique
- nikita khrushchev — Nikita S(ergeyevich) [ni-kee-tuh sur-gey-uh-vich;; Russian nyi-kyee-tuh syir-gye-yuh-vyich] /nɪˈki tə sɜrˈgeɪ ə vɪtʃ;; Russian nyɪˈkyi tə syɪrˈgyɛ yə vyɪtʃ/ (Show IPA), 1894–1971, Russian political leader: premier of the U.S.S.R. 1958–64.
- non-instructional — the act or practice of instructing or teaching; education.
- non-subordination — the act of placing in a lower rank or position: The refusal to allow women to be educated was part of society's subordination of women to men.
- nonunderstandable — Not understandable.
- nuclear chemistry — the branch of chemistry concerned with nuclear reactions
- nuclear isomerism — isomerism (def 2).
- nuclear scientist — a scientist who studies nuclear physics
- nuclear submarine — undersea vessel powered by atomic energy
- nuclear threshold — the point in war at which a combatant brings nuclear weapons into use
- nuclear-isomerism — Chemistry. the relation of two or more compounds, radicals, or ions that are composed of the same kinds and numbers of atoms but differ from each other in structural arrangement (structural isomerism) as CH 3 OCH 3 and CH 3 CH 2 OH, or in the arrangement of their atoms in space and therefore in one or more properties. Compare optical isomerism, stereoisomerism.
- nursery education — education provided at a school for young children, usually from three to five years old
- nursing auxiliary — someone who performs duties such as washing and dressing patients, making beds, etc, in an establishment such as a hospital
- odds-on favourite — a person, team, horse, etc that is regarded as the most likely to win a competition
- odour of sanctity — sanctimoniousness
- old south arabian — a group of four closely related Semitic languages, having a writing system and used from about the eighth to the fifth centuries b.c. in the southern part of Arabia.
- opening arguments — the statements or arguments provided by lawyers at the beginning of a trial
- opportunistically — adhering to a policy of opportunism; practicing opportunism.
- organ-pipe cactus — a treelike or columnar cactus, Lemaireocereus marginatus, of Mexico, having a central, erect spine surrounded by spreading spines in clusters of five to eight, and funnel-shaped, brownish-purple flowers.
- organophosphorous — Misspelling of organophosphorus.
- osculating circle — circle of curvature.
- out of all reason — unreasonable
- out of harm's way — If someone or something is out of harm's way, they are in a safe place away from danger or from the possibility of being damaged.
- outside broadcast — An outside broadcast is a radio or television programme that is not recorded or filmed in a studio, but in another building or in the open air.
- oversquare engine — An oversquare engine is an engine which has a cylinder bore that is larger than its stroke.
- parallel universe — Physics. any of a hypothetical collection of undetectable universes that are like our known universe but have branched off from our universe due to a quantum-level event. See also multiverse.