20-letter words containing r, a, p, t, l, y

marginal probability — (in a multivariate distribution) the probability of one variable taking a specific value irrespective of the values of the others
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.
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
ophthalmodynamometer — a device for determining the nearest point of ocular convergence.
peremptory challenge — a formal objection to the service of a juror by a party to a criminal prosecution or a civil action that requires no showing of cause.
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.
phenylpropyl acetate — a colorless, water-insoluble liquid, C 1 0 H 1 2 O 2 , used chiefly in perfumery.
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
play pass-the-parcel — to try to avoid a responsibility, or blame, by passing it on to someone else
polyanthus narcissus — a Eurasian amaryllidaceous plant, Narcissus tazetta, having clusters of small yellow or white fragrant flowers
portal-to-portal pay — payment, as to a miner or factory worker, that includes compensation for time spent on the employer's premises in preparation for a work shift, in travel from the entrance to the assigned work area and back, etc.: Because workers must change their clothes and pick up tools prior to the work shift, they are demanding portal-to-portal pay.
postal delivery zone — zone (def 10).
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.
primitive polynomial — a polynomial that has content equal to 1. Compare content1 (def 11a).
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
propylphenyl acetate — phenylpropyl acetate.
prothonotary warbler — a wood warbler, Protonotaria citrea, of the eastern U.S., having an orange-yellow head and underparts, and bluish-gray wings and tail.
psychiatric hospital — institution treating mental disorders
pyrenees-atlantiques — a department in SW France. 2978 sq. mi. (7710 sq. km). Capital: Pau.
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
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.
state highway patrol — a state's road traffic police
subscription library — a commercial lending library
supplementary angles — either of two angles that added together produce an angle of 180°.
teletype corporation — (company) The company which made Teletype teletypewriters. Address: Skokie, Illinois, USA.
to clean up your act — If someone who has been behaving badly cleans up their act, they start to behave in a more acceptable or responsible way.
to keep your balance — If you keep your balance, for example, when standing in a moving vehicle, you remain steady and do not fall over. If you lose your balance, you become unsteady and fall over.
triphenylmethane dye — any of a great number of dyes, as gentian violet, fuchsin, and rosaniline, produced from triphenylmethane by replacement of the ring hydrogen atoms with hydroxy, amino, sulfo, or other atoms or groups.
upper layer protocol — (protocol) 1. (ULP, or upper-layer protocol) Any protocol residing in OSI layers five or above. The Internet protocol suite includes many upper layer protocols representing a wide variety of applications e.g. FTP, NFS, RPC, and SMTP. These and other network applications use the services of TCP/IP and other lower layer protocols to provide users with basic network services. 2. A protocol higher in the OSI reference model than the current reference point. Upper Layer Protocol is often used to refer to the next-highest protocol in a particular protocol stack.
upper yosemite falls — a section of Yosemite Falls in central California, in the Yosemite National Park that is 436 m (1430 ft) high
white-lipped peccary — a piglike artiodactyl mammal, Tayassu albirostris, of forests of southern North America, Central and South America: family Tayassuidae
winter olympic games — an international contest of winter sports, esp skiing, held every four years

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