18-letter words containing u, n, p, r
- acupuncture needle — a very fine needle with a rounded tip, used in acupuncture
- adjustable spanner — a tool with adjustable jaws used for turning bolts, etc
- african tulip tree — a tropical African evergreen tree, Spathodea campaulata, with pinnate leaves, split pods, winged seeds, and large red flowers.
- almoner's cupboard — a cupboard with pierced doors, formerly used as a storage place for food.
- ammonium purpurate — murexide.
- angular dispersion — a measure of the angular separation of light rays of different wavelength or color traversing a prism or diffraction grating, equal to the rate of change of the angle of deviation with respect to the change in wavelength.
- anterior pituitary — a small, somewhat cherry-shaped double structure attached by a stalk to the base of the brain and constituting the master endocrine gland affecting all hormonal functions in the body, consisting of an anterior region ((anterior pituitary) or (adenohypophysis)) that develops embryonically from the roof of the mouth and that secretes growth hormone, LH, FSH, ACTH, TSH, and MSH, a posterior region ((posterior pituitary) or (neurohypophysis)) that develops from the back of the forebrain and that secretes the hormones vasopressin and oxytocin, and an intermediate part (pars intermedia) derived from the anterior region but joined to the posterior region, that secretes the hormone MSH in lower vertebrates.
- anthropomorphously — In an anthropomorphous manner; in a manner resembling that of a human.
- apartment building — An apartment building or apartment house is a tall building which contains different apartments on different floors.
- aperture synthesis — an array of radio telescopes used in radio astronomy to simulate a single large-aperture telescope. Some such instruments use movable dishes while others use fixed dishes
- apparent magnitude — magnitude (sense 3)
- apprentice plumber — a trainee plumber
- army of occupation — an army that goes into a defeated country to enforce peace terms, keep order, etc.
- assumption of risk — Assumption of risk is the practice of paying for minor losses yourself, but protecting against catastrophic losses by buying insurance cover.
- at your fingertips — If you say that something is at your fingertips, you approve of the fact that you can reach it easily or that it is easily available to you.
- auditory phonetics — the branch of phonetics concerned with the perception of speech sounds by humans
- australopithecines — Plural form of australopithecine.
- behaviour patterns — the characteristic ways in which a person or animal acts
- berwick-upon-tweed — a town in N England, in N Northumberland at the mouth of the Tweed: much involved in border disputes between England and Scotland between the 12th and 16th centuries; neutral territory 1551–1885. Pop: 12 870 (2001)
- born to the purple — being of royal or high birth
- brand-name product — A brand-name product is one which is made by a well-known manufacturer and has the manufacturer's label on it.
- bubble-jet printer — an ink-jet printer that heats the ink before printing
- calcium propionate — a white, water-soluble powder, CaC 6 H 10 O 4 , used in bakery products to inhibit the growth of fungi.
- campaign furniture — furniture, as chests or desks, having metal hinges on the corners and handles on the sides.
- caterpillar hunter — any of various carabid beetles of the genus Calosoma, of Europe and North America, which prey on the larvae of moths and butterflies
- cellular telephone — a mobile phone
- centre of pressure — the point in a body at which the resultant pressure acts when the body is immersed in a fluid
- clew down (or up) — to lower (or raise) a sail by means of clew lines
- coitus interruptus — the deliberate withdrawal of the penis from the vagina before ejaculation
- community property — the joint ownership of the property of a husband and wife
- composition rubber — manufactured rubber
- computer animation — animated film or video that is generated by computers
- computer scientist — a person with advanced knowledge of computers and how they work
- computer telephony — Computer Telephone Integration
- computer-generated — produced by a computer program
- conceptual realism — the doctrine that universals have real and independent existence.
- concurring opinion — an opinion issued by one or more judges which agrees with the decision reached by the majority of the court, but offers additional or different reasons for reaching that decision
- conjugated protein — a biochemical compound consisting of a sequence of amino acids making up a simple protein to which another nonprotein group (a prosthetic group), such as a carbohydrate or lipid group, is attached
- connected subgraph — (mathematics) A connected graph consisting of a subset of the nodes and edges of some other graph.
- constituency party — a branch of a political party operating within a constituency
- construction paper — Construction paper is a type of stiff, colored paper that children use for drawing and for making things.
- constructive proof — (mathematics) A proof that something exists that provides an example or a method for actually constructing it. For example, for any pair of finite real numbers n < 0 and p > 0, there exists a real number 0 < k < 1 such that f(k) = (1-k)*n + k*p = 0. A constructive proof would proceed by rearranging the above to derive an equation for k: k = 1/(1-n/p) From this and the constraints on n and p, we can show that 0 < k < 1. A few mathematicians actually reject *all* non-constructive arguments as invalid; this means, for instance, that the law of the excluded middle (either P or not-P must hold, whatever P is) has to go; this makes proof by contradiction invalid. See intuitionistic logic. Constructive proofs are popular in theoretical computer science, both because computer scientists are less given to abstraction than mathematicians and because intuitionistic logic turns out to be an appropriate theoretical treatment of the foundations of computer science.
- continuous process — A continuous process is a process in which the product comes out without interruption and not in groups.
- cornucopian thesis — the belief that, as long as science and technology continue to advance, growth can continue for ever because these new advances create new resources
- costume department — the department in a theatre or television company that is responsible for actors' costumes
- counter-adaptation — the act of adapting.
- counter-hypothesis — a proposition, or set of propositions, set forth as an explanation for the occurrence of some specified group of phenomena, either asserted merely as a provisional conjecture to guide investigation (working hypothesis) or accepted as highly probable in the light of established facts.
- counter-productive — Something that is counter-productive achieves the opposite result from the one that you want to achieve.
- counterprogramming — the practice of scheduling a program opposite another program, esp. a popular one, that appeals to a different kind of audience, as in placing a romantic film directed at women opposite a sports program mainly watched by men
- counterproposition — a proposition made in place of or in opposition to a preceding one.
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