21-letter words containing p, e, n, u, r, y
- alpha centauri system — a star system comprising the binary star Alpha Centauri A and B and Proxima Centauri (also called Alpha Centauri C), which is 0.1 light years closer to the sun. Visual magnitude: 0.01 (A), 1.33 (B); spectral type: G2V (A); distance from earth: 4.3 light years
- blow your own trumpet — If you blow your own trumpet or blow your own horn, you tell people that you are very clever or successful.
- bluethroat pikeblenny — See under pikeblenny.
- butterfly common lisp — A parallel version of Common LISP for the BBN Butterfly computer.
- conductivity improver — A conductivity improver is a substance used to get rid of static electrical charge in fuel, and improve the flow of the fuel.
- disruptive technology — A disruptive technology is a new technology, such as computers and the Internet, which has a rapid and major effect on technologies that existed before.
- employee contribution — money contributed by an employee to his or her employer's pension fund
- employer contribution — money contributed by an employer to his or her employee's pension fund
- equiangular hyperbola — a hyperbola with transverse and conjugate axes equal to each other.
- european space agency — an organization dedicated to space exploration with 18 European countries as members
- hay-pauncefote treaty — an agreement (1901) between the U.S. and Great Britain giving the U.S. the sole right to build a canal across Central America connecting the Atlantic and Pacific.
- insulin shock therapy — a former treatment for mental illness, especially schizophrenia, employing insulin-induced hypoglycemia as a method for producing convulsive seizures.
- intellectual property — Law. property that results from original creative thought, as patents, copyright material, and trademarks.
- irish republican army — an underground Irish nationalist organization founded to work for Irish independence from Great Britain: declared illegal by the Irish government in 1936, but continues activity aimed at the unification of the Republic of Ireland and Northern Ireland. Abbreviation: IRA, I.R.A.
- miniature photography — photography with a camera using film that is 35 millimeters wide or less.
- multilayer perceptron — A network composed of more than one layer of neurons, with some or all of the outputs of each layer connected to one or more of the inputs of another layer. The first layer is called the input layer, the last one is the output layer, and in between there may be one or more hidden layers.
- parliamentary inquiry — a question asked of the presiding officer of a parliament in relation to parliamentary law
- play russian roulette — take a foolish risk
- pneumoencephalography — encephalography.
- premenstrual syndrome — a complex of physical and emotional changes, including depression, irritability, appetite changes, bloating and water retention, breast soreness, and changes in muscular coordination, one or more of which may be experienced in the several days before the onset of menstrual flow. Abbreviation: PMS.
- psychoneuroimmunology — the study of the effects of psychological factors on the immune system
- public-key encryption — (cryptography) (PKE, Or "public-key cryptography") An encryption scheme, introduced by Diffie and Hellman in 1976, where each person gets a pair of keys, called the public key and the private key. Each person's public key is published while the private key is kept secret. Messages are encrypted using the intended recipient's public key and can only be decrypted using his private key. This is often used in conjunction with a digital signature. The need for sender and receiver to share secret information (keys) via some secure channel is eliminated: all communications involve only public keys, and no private key is ever transmitted or shared. Public-key encryption can be used for authentication, confidentiality, integrity and non-repudiation. See also knapsack problem.
- pulse height analyser — a multichannel analyser that sorts pulses into selected amplitude ranges
- pulse height analyzer — an instrument that records or counts an electrical pulse if its amplitude falls within specified limits: used in nuclear physics research for the determination of energy spectra of nuclear radiations
- pure imaginary number — a complex number of the form iy where y is a real number and i = .
- put in the hard yards — to make a great effort to achieve an end
- pyrenean mountain dog — a large heavily built dog of an ancient breed originally used to protect sheep from wild animals: it has a long thick white coat with a dense ruff
- quality point average — grade point average.
- rectangular hyperbola — a hyperbola with perpendicular asymptotes
- residual unemployment — the unemployment that remains in periods of full employment, as a result of those mentally, physically, or emotionally unfit to work
- social inquiry report — (in Britain) a report on a person and his or her circumstances, which may be required by a court before sentencing and is made by a probation officer or a social worker from a local authority social services department
- supplementary benefit — (formerly) an extra amount of money that is paid to someone by the government, in addition to their normal income. Replaced by income support in 1988
- therapeutic community — a group-based form of therapy for mental disorders, sometimes residential
- third-party insurance — insurance that compensates for a loss to a party other than the insured for which the insured is liable.
- trustee in bankruptcy — a person appointed by a court to administer the property of a bankrupt.
- ulster unionist party — a Northern Irish political party advocating the maintenance of union with the UK
- uncertainty principle — the principle of quantum mechanics, formulated by Heisenberg, that the accurate measurement of one of two related, observable quantities, as position and momentum or energy and time, produces uncertainties in the measurement of the other, such that the product of the uncertainties of both quantities is equal to or greater than h/ 2 π, where h equals Planck's constant.
- west university place — a city in SE Texas.
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