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20-letter words containing n, p, d

  • little ringed plover — a small grey and brown coloured plover which breeds in Europe and Asia and migrates to Africa for winter
  • llywelyn ap gruffudd — died 1282, prince of Wales (1258–82): the only Welsh ruler to be recognized as such by the English
  • magneto-optical disk — (hardware, storage)   (MO) A plastic or glass disk coated with a compound (often TbFeCo) with special optical, magnetic and thermal properties. The disk is read by bouncing a low-intensity laser off the disk. Originally the laser was infrared, but frequencies up to blue may be possible giving higher storage density. The polarisation of the reflected light depends on the polarity of the stored magnetic field. To write, a higher intensity laser heats the coating up to its Curie point, allowing its magnetisation to be altered in a way that is retained when it has cooled. Although optical, they appear as hard drives to the operating system and do not require a special filesystem (they can be formatted as FAT, HPFS, NTFS, etc.). The initial 5.25" MO drives, introduced at the end of the 1980s, were the size of a full-height 5.25" hard drive (like in IBM PC XT) and the disks looked like a CD-ROM enclosed in an old-style cartridge In 2006, a 3.5" drive has the size of 1.44 megabyte diskette drive with disks about the size of a regular 1.44MB floppy disc but twice the thickness.
  • marketing department — the department of a commercial organization that deals with the marketing of products
  • matched-pairs design — (of an experiment) concerned with measuring the values of the dependent variables for pairs of subjects that have been matched to eliminate individual differences and that are respectively subjected to the control and the experimental condition
  • maternal deprivation — the lack of a mother in a child's life, considered a cause of psychological problems later in life
  • mechanical impedance — impedance (def 2).
  • mechanical-impedance — Electricity. the total opposition to alternating current by an electric circuit, equal to the square root of the sum of the squares of the resistance and reactance of the circuit and usually expressed in ohms. Symbol: Z.
  • medical practitioner — doctor
  • megabytes per second — (unit)   (MBps, MB/s) Millions of bytes per second. A unit of data rate. 1 MB/s = 1,000,000 bytes per second (not 1,048,576).
  • model-view-presenter — (programming)   (MVP) A user interface architectural pattern where functions are separated between the model, view and presenter. The model defines the data to be displayed or otherwise acted upon in the user interface. The view displays data from the model and routes user commands (events) to the presenter to act upon that data. The presenter retrieves data from the model and displays it in the view. The implementation of MVP can vary as to how much presentation logic is handled by the presenter and the view. In a web application most presentation logic is usually in the view which runs in the web browser. MVP is one of the MV* variations of the MVC pattern.
  • mollweide projection — homolographic projection.
  • 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.
  • net domestic product — the gross domestic product minus an allowance for the depreciation of capital goods
  • net national product — the gross national product less allowance for depreciation of capital goods. Abbreviation: NNP.
  • new democratic party — the Canadian social democratic party formed in 1961
  • niemann-pick disease — a rare, hereditary lipid-storage disease, occurring primarily among Ashkenazic Jews, in which abnormal lipid metabolism results in enlargement of the liver, spleen, and lymph nodes, and in progressive mental and physical deterioration.
  • nondirective therapy — client-centered therapy.
  • nonrepeating decimal — a decimal representation of any irrational number, having the property that no sequence of digits is repeated ad infinitum.
  • occupational disease — Also called industrial disease. a disease caused by the conditions or hazards of a particular occupation.
  • old english sheepdog — one of an English breed of large working dogs having a long, shaggy, gray or blue-merle and white coat that hangs over the eyes, and a bobbed tail, originally developed to drive sheep and cattle.
  • operant conditioning — conditioning (def 1).
  • operating conditions — Operating conditions are a set of conditions for operating a particular system or process.
  • operational database — (database)   A database containing up-to-date, modifiable data, in contrast to a decision support database.
  • operator overloading — overloading
  • ophthalmodynamometer — a device for determining the nearest point of ocular convergence.
  • optical mark reading — the reading of marks by an optical device whereby the information can be stored in machine-readable form
  • owner-occupied house — a house that is owned by the person who lives in it
  • packed like sardines — If you say that a crowd of people are packed like sardines, you are emphasizing that they are sitting or standing so close together that they cannot move easily.
  • paint the town (red) — to go on a boisterous spree; carouse
  • pappus of alexandria — 3rd century bc, Greek mathematician, whose eight-volume Synagoge is a valuable source of information about Greek mathematics
  • para-dichlorobenzene — a white, crystalline, volatile, water-insoluble solid, C 6 H 4 Cl 2 , of the benzene series, having a penetrating odor: used chiefly as a moth repellent.
  • paranoid programming — (programming)   A programming style that tries to prepare for the worst external conditions, including incorrect input, resource limitations, hardware and software failure and even can't happen errors, to the fullest possible extent. While some believe in the motto "professional programming is paranoid programming", the expression usually has the connotation that the efforts are unnecessary or too costly ("Maybe this code is just paranoid programming, but I think it is necessary to avoid a possible overflow condition".)
  • parataxic distortion — a distortion in perception, especially of interpersonal relationships, based on a tendency to perceive others in accordance with a pattern determined by previous experiences.
  • parkinson's syndrome — a complex of symptoms indistinguishable from Parkinson's disease, commonly affecting boxers or sometimes occurring as a result of substance abuse or an encephalitic infection.
  • partial differential — an expression obtained from a given function of several variables by taking the partial derivative with respect to one of the variables and multiplying by the increment in that variable.
  • partitioned data set — (file format)   (PDS) A data set on an IBM mainframe that contains members, each of which acts like a separate data set. Partitioned data sets are more space-efficient than individual data sets, because they can put more than one data set on a track. They are also used to hold libraries, with one function per member. The syntax for a member is NAME.OF.PDS(MEMBER) although some systems (such as Phoenix) could use NAME.OF.PDS:MEMBER Original PDSes were of fixed size, and needed frequent compression to recover space after deleting or changing members. Newer PDS/E Extended PDSes do not have this problem.
  • paternal grandfather — the father of someone's father
  • paternal grandmother — the mother of someone's father
  • pedro juan caballero — a city in E central Paraguay.
  • pentobarbital sodium — a barbiturate drug used in medicine as a sedative and hypnotic. Formula: C11H17N2O3Na
  • pentose nucleic acid — a nucleic acid containing a pentose.
  • periarteritis nodosa — polyarteritis.
  • period of revolution — a rather large interval of time that is meaningful in the life of a person, in history, etc., because of its particular characteristics: a period of illness; a period of great profitability for a company; a period of social unrest in Germany.
  • periodontal membrane — the collagenous, fibrous connective tissue between the cementum of the tooth and the alveolus.
  • permonosulfuric acid — persulfuric acid (def 1).
  • perpendicular gothic — the style of Gothic architecture in England during the 14th and 15th centuries, characterized by tracery having vertical lines, a four-centred arch, and fan vaulting
  • personality disorder — any of a group of mental disorders characterized by deeply ingrained maladaptive patterns of behavior and personality style, which are usually recognizable as early as adolescence and are often lifelong in duration.
  • personnel department — business: human resources
  • phenyldiethanolamine — a white, crystalline, slightly water-soluble substance, C 1 0 H 1 5 NO 2 , used in the manufacture of dyes and in organic synthesis.
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