20-letter words containing p, y, r, u
- adventure playground — An adventure playground is an area of land for children to play in, usually in cities or in a park. It has wooden structures and equipment such as ropes, nets, and rubber tyres.
- alpha-naphthyl group — naphthyl group (def 1).
- auxiliary power unit — an additional engine fitted to an aircraft to operate when the main engines are not in use
- binge-purge syndrome — bulimia.
- buoyancy compensator — an inflatable vest used to control one's buoyancy underwater or to rest at the surface, usually having a connecting hose for inflation or deflation by mouth and a CO 2 cartridge for rapid, emergency inflation.
- calcium hypochlorite — a white, crystalline compound, Ca(OCl) 2 , used as a disinfectant and bleaching agent.
- carbocyclic compound — any of a group of organic chemical compounds in which all the atoms composing the ring are carbon atoms, as benzene or cyclopropane.
- chemotherapeutically — By means of chemotherapy.
- child support agency — the British government agency concerned with the welfare of children
- complementary colour — one of any pair of colours, such as yellow and blue, that give white or grey when mixed in the correct proportions
- computability theory — (mathematics) The area of theoretical computer science concerning what problems can be solved by any computer. A function is computable if an algorithm can be implemented which will give the correct output for any valid input. Since computer programs are countable but real numbers are not, it follows that there must exist real numbers that cannot be calculated by any program. Unfortunately, by definition, there isn't an easy way of describing any of them! In fact, there are many tasks (not just calculating real numbers) that computers cannot perform. The most well-known is the halting problem, the busy beaver problem is less famous but just as fascinating.
- computer typesetting — a system for the high-speed composition of type by a device driven by punched paper tape or magnetic tape that has been processed by a computer
- computing dictionary — Free On-line Dictionary of Computing
- construction company — a business enterprise concerned with the construction of buildings, bridges, etc
- cycloidal propulsion — propulsion of a vessel by propellers of controllable pitch that steer as well as propel.
- double-aspect theory — a monistic theory that holds that mind and body are not distinct substances but merely different aspects of a single substance
- dry-bulb temperature — A dry-bulb temperature is the temperature of a dry surface in a vapor-gas environment.
- equity of redemption — the right that a mortgager has in equity to redeem his property on payment of the sum owing, even though the sum is overdue
- group of twenty-four — a group of twenty-four rich and industrialized countries of the world, whose heads of government meet regularly to coordinate the position of developing countries on monetary and development issues
- happy hunting ground — the North American Indian heaven, conceived of as a paradise of hunting and feasting for warriors and hunters.
- hire-purchase system — a system of payment for a commodity in regular installments while using it.
- hospitality industry — the hotel and accommodation industry
- how are you keeping? — how are you?
- hydraulic suspension — a system of motor-vehicle suspension using hydraulic members, often with hydraulic compensation between front and rear systems (hydroelastic suspension)
- hydrostatic pressure — Hydrostatic pressure is the pressure exerted by a liquid that depends on how deep it is.
- hypophosphorous acid — a colorless or yellowish, water-soluble, liquid, monobasic acid, H 3 PO 2 , having a sour odor, and used as a reducing agent.
- in (or out of) play — in (or not in) the condition for continuing play
- in the lap of luxury — If you say that someone lives in the lap of luxury, you mean that they live in conditions of great comfort and wealth.
- insulin-coma therapy — a former treatment for mental illness, especially schizophrenia, employing insulin-induced hypoglycemia as a method for producing convulsive seizures.
- keep your mouth shut — If you keep your mouth shut about something, you do not talk about it, especially because it is a secret.
- laboratory equipment — apparatus for scientific research and experiments
- linguistic geography — dialect geography.
- liquidity preference — (in Keynesian economics) the degree of individual preference for cash over less liquid assets.
- llywelyn ap gruffudd — died 1282, prince of Wales (1258–82): the only Welsh ruler to be recognized as such by the English
- look before you leap — be aware of the risks involved in sth
- lymphogranulomatosis — widespread infectious granuloma of the lymphatic system.
- mickey mouse program — (jargon) The North American equivalent of a "noddy program", i.e. trivial. The term doesn't necessarily have the belittling connotations of mainstream slang "Oh, that's just mickey mouse stuff!"; sometimes trivial programs can be very useful.
- military superiority — the power, strength, or numbers of armed forces of a country viewed as an advantage over another country
- mpeg-1 audio layer 1 — (audio, compression, algorithm) (MP1) A simple 32-subband audio compressor using a floating point representation for subband samples. Resolution and scale factor are stored for groups of 12 subsamples. MP1 is only used for Philips DCC Digital Compact cassette with data rates of 384 kbps.
- mpeg-1 audio layer 3 — (music, file format) (MP3) A digital audio compression algorithm that acheives a compression factor of about twelve while preserving sound quality. It does this by optimising the compression according to the range of sound that people can actually hear. MP3 is currently (July 1999) the most powerful algorithm in a series of audio encoding standards developed under the sponsorship of the Moving Picture Experts Group (MPEG) and formalised by the International Organization for Standardization (ISO). MP3 is very different from Layer 2, using an additional MDCT layer to increase frequency resolution. Its scale factor groups are more optimised for the human ear, and it uses nonlinear sample quantisation and Huffman coding. MP3 files (filename extension ".mp3") can be downloaded from many websites and can be played using software available for most operating systems (also downloadable), e.g. Winamp for PC, MacAmp for Macintosh, and mpeg123 for Unix. MP3 files are usually downloaded completely before playing but streaming MP3 is also possible. A program called a "ripper" can be used to copy a selection from a music CD onto your hard disk and another program called an encoder can convert it to an MP3 file.
- mpeg-2 audio layer 3 — (compression, standard, algorithm, file format) An extention of MPEG-1 audio layer 3 for lower sampling rates (16-24 kHz) targeting bit rates from 32-64 kbps (possibly 8-160 kbps). It is often combined with MPEG-2 LSF.
- multipart stationery — continuous stationery comprising two or more sheets, either carbonless or with carbon paper between the sheets
- multiple personality — a rare disorder in which an individual displays several functionally dissociated personalities, each of a complexity comparable to that of a normal individual.
- multistep hydroplane — a motorship having a flat bottom built as a series of planes inclined forward, the ship planing on each from stem to stern as its speed increases.
- multistorey car park — a car park consisting of several levels
- neurophysiologically — In terms of, or with regard to, neurophysiology.
- neuropsychiatrically — In terms of neuropsychiatry.
- neuropsychologically — In terms of or by means of neuropsychology.
- nine plus zero array — the arrangement of microtubules characteristic of basal bodies and centrioles, consisting of nine evenly spaced triplets between the outer and inner walls of the structure and having no central microtubules. Symbol: 9 + 0.
- occupational therapy — a form of therapy in which patients are encouraged to engage in vocational tasks or expressive activities, as art or dance, usually in a social setting.
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