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20-letter words containing d, s, p

  • phosphoric anhydride — phosphorus pentoxide.
  • phosphorus pentoxide — a white, deliquescent, crystalline powder, P 2 O 5 , that, depending upon the amount of water it absorbs, forms orthophosphoric acid, metaphosphoric acid, or pyrophosphoric acid, produced by the burning of phosphorus in dry air: used in the preparation of phosphoric acids, as a drying and dehydrating agent, and in organic synthesis.
  • 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)
  • physiologic jaundice — a transitory jaundice that affects some infants for the first few days after birth.
  • pickwickian syndrome — an abnormality characterized by extreme obesity accompanied by sleepiness, hypoventilation, and polycythemia.
  • planned obsolescence — a method of stimulating consumer demand by designing products that wear out or become outmoded after limited use.
  • pleased with oneself — If someone seems very satisfied with something they have done, you can say that they are pleased with themselves, especially if you think they are more satisfied than they should be.
  • poisson distribution — a limiting form of the binomial probability distribution for small values of the probability of success and for large numbers of trials: particularly useful in industrial quality-control work and in radiation and bacteriological problems.
  • polyvinylidene resin — any of the class of thermoplastic resins derived by the polymerization or copolymerization of a polyvinylidene compound, used similarly to the polyvinyl resins.
  • portuguese water dog — one of a breed of medium-sized dogs originally developed to assist Portuguese fishermen and having a profuse black or brown coat with or without white markings and webbed feet.
  • possessive adjective — See at possessive (def 4a).
  • post-order traversal — traversal
  • postal delivery zone — zone (def 10).
  • postcode prescribing — the practice of prescribing more or less expensive and effective medical treatments to patients depending on where they live in a country, and which treatments their health board is willing and able to provide
  • posted write-through — A cache with a posted write-through policy (e.g. Intel 80386) delays the write-back to main memory until the bus is not in use.
  • postgraduate student — a student who has obtained a degree from a university, etc, and is pursuing studies for a more advanced qualification
  • postnatal depression — a form of clinical depression that occurs in mothers after the birth of a baby
  • potassium dichromate — an orange-red crystalline soluble solid substance that is a good oxidizing agent and is used in making chrome pigments and as a bleaching agent. Formula: K2Cr2O7
  • pound cost averaging — a method of accumulating capital by investing a fixed sum in a particular security at regular intervals, in order to achieve an average purchase price below the arithmetic average of the market prices on the purchase dates
  • 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.
  • prestressed concrete — concrete reinforced with wire strands, pretensioned or post-tensioned within their elastic limit to give an active resistance to loads.
  • price discrimination — the practice of offering identical goods to different buyers at different prices, when the goods cost the same.
  • prince edward island — an island in the Gulf of St. Lawrence, forming a province of Canada: 2184 sq. mi. (5655 sq. km). Capital: Charlottetown.
  • prince rupert's drop — a glass bead in the shape of a teardrop, a by-product of the glass-making process, formed by molten glass falling into water. The body of the drop can withstand great force, for example a hammer blow, but the whole will explode if the tail is nipped or the surface scored
  • prince william sound — a sound in the Gulf of Alaska, on the S coast of Alaska: S end of Trans-Alaska oil pipeline at port of Valdez.
  • prohibited substance — a substance, such as a drug, etc, that is banned or forbidden by law or other authority
  • prosthetic dentistry — prosthodontics.
  • pseudo-psychological — of or relating to psychology.
  • pseudoparenchymatous — (in certain fungi and red algae) a compact mass of tissue, made up of interwoven hyphae or filaments, that superficially resembles plant tissue.
  • public administrator — an official of a city, county, or state government.
  • pure lambda-calculus — Lambda-calculus with no constants, only functions expressed as lambda abstractions.
  • rapid transit system — a rail or other system providing rapid public transport
  • raynaud's phenomenon — a secondary circulatory disorder, often associated with a primary vascular disease, characterized by changes of blood flow resulting in white, bluish, or red hands and feet
  • refuse disposal unit — a unit or part of a sink that disposes of waste food, etc, by grinding
  • republic of maldives — a republic occupying an archipelago of 1087 coral islands in the Indian Ocean, southwest of Sri Lanka: came under British protection in 1887; became independent in 1965 and a republic in 1968; member of the Commonwealth (1982–2016). The economy and infrastructure were severely damaged in the Indian Ocean tsunami of December 2004. Official language: Divehi. Official religion: (Sunni) Muslim. Currency: rufiyaa. Capital: Malé. Pop: 393 988 (2013 est). Area: 298 sq km (115 sq miles)
  • revolving presidency — a form of presidency in which the president and vice-president, or countries or bodies acting as such, switch roles after a set period and then back again and so on
  • ring-necked pheasant — a gallinaceous Asian bird, Phasianus colchicus, having a white band around its neck, introduced into Great Britain, North America, and the Hawaiian Islands.
  • schizoid personality — sb with identity disorder
  • schwarzschild sphere — the sphere which surrounds a non-rotating uncharged black hole, from within which no information can escape because of gravitational forces
  • second-hand bookshop — a shop selling second-hand books
  • send someone packing — to dismiss or get rid of (someone) peremptorily
  • sharp-tailed sparrow — a sparrow, Ammospiza caudacuta, inhabiting salt marshes in North America, having narrow, sharply pointed tail feathers.
  • societal development — the formation and transformation of social life, customs, institutions, etc.
  • sound motion picture — a motion picture with a soundtrack.
  • specific conductance — conductivity (def 2).
  • specific-conductance — conductivity (def 2).
  • spherical coordinate — Usually, spherical coordinates. any of three coordinates used to locate a point in space by the length of its radius vector and the angles this vector makes with two perpendicular polar planes.
  • spiral of archimedes — a curve that is the locus of a point that moves outward with uniform speed along a vector, beginning at the origin, while the vector rotates about the origin with uniform angular velocity. Equation (in polar coordinates): r = aθ.
  • split the difference — the state or relation of being different; dissimilarity: There is a great difference between the two.
  • spotted crane's-bill — the American wild geranium, Geranium maculatum.
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