20-letter words containing p, a, r, t, y, i
- marginal probability — (in a multivariate distribution) the probability of one variable taking a specific value irrespective of the values of the others
- megakaryocytopoiesis — (biology) The cellular development process that leads to platelet production.
- military superiority — the power, strength, or numbers of armed forces of a country viewed as an advantage over another country
- missionary apostolic — an honorary title conferred by the pope on certain missionaries.
- 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
- neuropsychiatrically — In terms of neuropsychiatry.
- new democratic party — the Canadian social democratic party formed in 1961
- nondirective therapy — client-centered therapy.
- 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.
- operational strategy — a plan or set of plans for successfully running a business, etc
- peroxyacetyl nitrate — an unstable nitrogen compound, found in certain types of smog, that is an irritant, esp. to the eyes and to plants
- 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.
- photophosphorylation — phosphorylation that utilizes light as a source of energy, as in the formation of ATP from ADP and phosphorus during photosynthesis.
- phthalocyanine green — a pigment used in painting, derived from chlorinated copper phthalocyanine and characterized chiefly by its intense green color and permanence.
- physical double star — two stars that appear as one if not viewed through a telescope with adequate magnification, such as two stars that are separated by a great distance but are nearly in line with each other and an observer (optical double star) or those that are relatively close together and comprise a single physical system (physical double star)
- physical meteorology — the branch of meteorology dealing with the study of optical, electrical, acoustical, and thermodynamic phenomena in the atmosphere, including the physics of clouds and precipitation.
- planetary precession — the small component of the precession of the equinoxes contributed by the motion of the ecliptic, the change in orientation of the plane of the earth's orbit being produced by the gravitational attraction of the planets.
- play merry hell with — to disturb greatly; disrupt
- polyanthus narcissus — a Eurasian amaryllidaceous plant, Narcissus tazetta, having clusters of small yellow or white fragrant flowers
- portrait photography — the activity or art of taking portrait photos
- post-synchronization — the recording of dialogue and sound effects in synchronization with the picture after the film has been shot.
- postal delivery zone — zone (def 10).
- preservation society — a society dedicated to the preservation of something, especially a building, environment, or animal
- presidential primary — a direct primary for the selection of state delegates to a national party convention and the expression of preference for a U.S. presidential nominee.
- primary optical area — a point in or toward the upper left-hand corner of a printed page, advertisement, or the like, looked at first in reading. Abbreviation: POA.
- primary spermatocyte — a male germ cell (primary spermatocyte) that gives rise by meiosis to a pair of haploid cells (secondary spermatocytes) that give rise in turn to spermatids.
- primitive polynomial — a polynomial that has content equal to 1. Compare content1 (def 11a).
- priority inheritance — (parallel) A technique for avoiding priority inversion by temporarily raising the prioriry of all processes that want to access a shared resource to the highest priority level of any of them. Priority inversion occurs where a low priority process, L is holding a resource required by a high priority process, H, but L is not running because a medium priority process, M is running. Under priority inheritance, L temporarily inherits H's priority, allowing L to run and release the resource H is waiting for. For example, an ambulance (H) is stuck behind a lorry (L) waiting at a junction (the shared resource) for a gap in a line of cars (M) using the junction. Applying priority inheritance, the cars give way to the lorry as they would to the ambulance, thus allowing the lorry and then the ambulance to use the junction.
- probability function — the function the values of which are probabilities of the distinct outcomes of a discrete random variable
- property speculation — the buying or selling of property in the hope of deriving capital gains
- proprietary medicine — a drug or agent manufactured and distributed under a trade name
- prosecuting attorney — the public officer in a county, district, or other jurisdiction charged with carrying on the prosecution in criminal proceedings.
- psychiatric hospital — institution treating mental disorders
- pyrenees-atlantiques — a department in SW France. 2978 sq. mi. (7710 sq. km). Capital: Pau.
- rapid transit system — a rail or other system providing rapid public transport
- recreational therapy — therapy by means of recreational activities engaged in by the patient
- relative probability — a measure or estimate of the degree of confidence one may have in the occurrence of an event, defined as the limit of the proportion observed in a sample as the sample size tends to infinity
- respiratory quotient — the ratio of the amount of carbon dioxide released by the lungs to the amount of oxygen taken in during a given period.
- rocky mountain sheep — bighorn.
- royal leamington spa — a city in Warwickshire, central England: health resort.
- schizoid personality — sb with identity disorder
- spanish oyster plant — a composite plant, Scolymus hispanicus, of southern Europe, having spiny, thistlelike leaf margins, small yellow flowers, and an edible root.
- spectroscopic binary — a binary star having components that are not sufficiently separated to be resolved by a telescope, known to be a binary only bythe variations in wavelength of emitted light that are detected by a spectroscope.
- state highway patrol — a state's road traffic police
- subscription library — a commercial lending library
- teletype corporation — (company) The company which made Teletype teletypewriters. Address: Skokie, Illinois, USA.
- the (great) pyramids — the three large pyramids at Gîza, Egypt: the largest is the Pyramid of Khufu