19-letter words containing a, n, o, u, r
- mutual masturbation — the act of two or more people masturbating each other
- narcotics anonymous — an organization that helps drug users recover from drug addiction
- national curriculum — The National Curriculum is the course of study that most school pupils in England and Wales are meant to follow between the ages of 5 and 16.
- natural catastrophe — A natural catastrophe is an unexpected event, caused by nature, such as an earthquake or flood, in which there is a lot of suffering, damage, or death.
- negation by failure — An extralogical feature of Prolog and other logic programming languages in which failure of unification is treated as establishing the negation of a relation. For example, if Ronald Reagan is not in our database and we asked if he was an American, Prolog would answer "no".
- neighbourhood watch — a scheme under which members of a community agree together to take responsibility for keeping an eye on each other's property, as a way of preventing crime
- neuropathologically — In a neuropathologic way.
- neuropsychodynamics — The theoretical synthesis of neuroscience and psychodynamics.
- neurotransmissional — Relating to neurotransmission.
- new year resolution — a promise to yourself or decision to do something, especially to improve one's behaviour or lifestyle in some way, during the year ahead
- nicolaus copernicus — Nicolaus [nik-uh-ley-uh s] /ˌnɪk əˈleɪ əs/ (Show IPA), (Mikolaj Kopernik) 1473–1543, Polish astronomer who promulgated the now accepted theory that the earth and the other planets move around the sun (the Copernican System)
- nine plus two array — the arrangement of microtubules in a flagellum or cilium, consisting of a ring of nine evenly spaced couplets surrounding two central singlets. Symbol: 9 + 2.
- non causa pro causa — the fallacy of giving as a reason for a conclusion a proposition not actually relevant to that conclusion.
- non-contemporaneous — living or occurring during the same period of time; contemporary.
- nonforfeiture value — any benefit, as cash or other form of insurance, available to a life-insurance policyholder who discontinues premium payments on the policy.
- nonmaterial culture — the aggregate of values, mores, norms, etc., of a society; the ideational structure of a culture that provides the values and meanings by which it functions.
- nonproprietary drug — A nonproprietary drug is a generic drug that is essentially similar to a drug with a brand name.
- normal distribution — a theoretical frequency distribution represented by a normal curve.
- not worth a crumpet — utterly worthless
- noughts and crosses — tick-tack-toe (def 1).
- noughts-and-crosses — tick-tack-toe (def 1).
- nuclear power plant — factory that generates atomic energy
- nuits-saint-georges — a fine red wine produced near the town of Nuits-Saint-Georges in Burgundy
- oak-leaved geranium — a geranium, Pelargonium quercifolium, of southern Africa, having oaklike leaves with purple veins and sparse clusters of purple flowers with darker markings.
- occupation grouping — a category in a system of classifying people according to occupation, based originally on information obtained by government census and subsequently developed by market research. The classifications are used by the advertising industry to identify potential markets. The groups are A, B, C1, C2, D, and E
- occupational hazard — a danger or hazard to workers that is inherent in a particular occupation: Silicosis is an occupational hazard of miners.
- oceanus procellarum — (Ocean of Storms) the largest dark plain on the face of the moon, in the second and third quadrants: about 2 million square miles (5.2 million sq. km).
- old church slavonic — the oldest attested Slavic language, an ecclesiastical language written first by Cyril and Methodius in a Bible translation of the 9th century and continued in use for about two centuries. It represents the South Slavic, Bulgarian dialect of 9th-century Salonika with considerable addition of other South and West Slavic elements. Abbreviation: OCS.
- open-hearth furnace — a process of steelmaking in which the charge is laid in a furnace (open-hearth furnace) on a shallow hearth and heated directly by burning gas as well as radiatively by the furnace walls.
- ordnance survey map — An Ordnance Survey map is a detailed map produced by the British or Irish government map-making organization.
- oriental fruit moth — a moth, Grapholitha molesta, introduced into the U.S. from Asia, the larvae of which infest and feed on the twigs and fruits of peach, plum, and related trees.
- orthopaedic surgeon — a surgeon specializing in the branch of surgery concerned with disorders of the spine and joints and the repair of deformities of these parts
- oscillating circuit — a circuit producing electrical oscillations.
- out of the ordinary — of no special quality or interest; commonplace; unexceptional: One novel is brilliant, the other is decidedly ordinary; an ordinary person.
- oxidation-reduction — a chemical reaction between two substances in which one substance is oxidized and the other reduced.
- oxyacetylene burner — a blowpipe for cutting or welding metals at high temperatures
- parametric equation — one of two or more equations expressing the location of a point on a curve or surface by determining each coordinate separately.
- particular solution — a solution of a differential equation containing no arbitrary constants.
- party-column ballot — Indiana ballot.
- pastoral counseling — the use of psychotherapeutic techniques by trained members of the clergy to assist parishioners who seek help for personal or emotional problems.
- penecontemporaneous — formed during or shortly after the formation of the containing rock stratum: penecontemporaneous minerals.
- performance figures — the statistics that indicate how well or badly a company or organization has performed
- perpetual adoration — uninterrupted adoration of the Blessed Sacrament.
- perpetual inventory — a form of stock control in which running records are kept of all acquisitions and disposals
- phenanthrenequinone — a yellowish-orange, crystalline, water-insoluble solid, C 1 4 H 8 O 2 , used chiefly in organic synthesis and the manufacture of dyes.
- pneumoencephalogram — an encephalogram made after the replacement of the cerebrospinal fluid by air or gas, rarely used since the development of the CAT scanner.
- pneumogastric nerve — the vagus nerve.
- poincare conjecture — Mathematics. the question of whether a compact, simply connected three-dimensional manifold is topologically equivalent to a three-dimensional sphere.
- pointe-aux-trembles — a city in S Quebec, in E Canada, N of Montreal, on the St. Lawrence.
- popular sovereignty — the doctrine that sovereign power is vested in the people and that those chosen to govern, as trustees of such power, must exercise it in conformity with the general will.