17-letter words containing s, t, p
- pinckney's treaty — an agreement in 1795 between Spain and the U.S. by which Spain recognized the 31st parallel as the southern boundary of the U.S. and permitted free navigation of the Mississippi to American ships.
- pincushion cactus — any of various low-growing, spiny cacti of the genus Mammillaria.
- pink-footed goose — a Eurasian goose, Anser brachyrhynchus, having a reddish-brown head, pink legs, and a pink band on its black beak
- pioneering spirit — a willingness to endure hardship in order to explore new places or try out new things
- pitot-static tube — a device combining a Pitot tube with a static tube: used to measure airspeed.
- pittsburg landing — a village in SW Tennessee, on the Tennessee River: battle of Shiloh in 1862.
- planck's constant — the fundamental constant of quantum mechanics, expressing the ratio of the energy of one quantum of radiation to the frequency of the radiation and approximately equal to 6.624 × 10− 27 erg-seconds. Symbol: h.
- plastic explosive — a puttylike substance that contains an explosive charge, and is detonated by fuse or by remote control: used especially by terrorists and in guerrilla warfare.
- plastics industry — the industry that makes plastics
- plateau's problem — the problem in the calculus of variations of finding the surface with the least area bounded by a given closed curve in space.
- play with oneself — a dramatic composition or piece; drama.
- plug and feathers — an apparatus for splitting stone, consisting of two tapered bars (feathers) inserted into a hole drilled into the stone, between which a narrow wedge (plug) is hammered to spread them.
- plumbing fixtures — things such as pipes, sinks, toilets that are fixed in position in a building
- pocket battleship — a small heavily armed and armored warship serving as a battleship because of limitations imposed by treaty.
- point of presence — (PoP) A site where there exists a collection of telecommunications equipment, usually modems, digital leased lines and multi-protocol routers. An Internet access provider may operate several PoPs distributed throughout their area of operation to increase the chance that their subscribers will be able to reach one with a local telephone call. The alternative is for them to use virtual PoPs (virtual points of presence) via some third party.
- point of purchase — designating or in use at a retail outlet where an item can be purchased; point-of-sale: point-of-purchase displays to entice the buyer.
- point reyes lilac — a prostrate shrub, Ceanothus gloriosus, of southern California, having leathery, roundish leaves and purplish or deep-blue flowers.
- point-of-purchase — designating or in use at a retail outlet where an item can be purchased; point-of-sale: point-of-purchase displays to entice the buyer.
- pointer swizzling — swizzle
- poison-pen letter — A poison-pen letter is an unpleasant unsigned letter which is sent in order to upset someone or to cause trouble.
- polar coordinates — Usually, polar coordinates. one of two coordinates used to locate a point in a plane by the length of its radius vector and the angle this vector makes with the polar axis (polar angle)
- polioencephalitis — a disease characterized by inflammation of the gray matter of the brain.
- political science — a social science dealing with political institutions and with the principles and conduct of government.
- polystyrene chips — small pieces of polystyrene used for insulating or packing
- porterhouse steak — large cut of beef loin
- portuguese guinea — former name of Guinea-Bissau.
- positive definite — (of a quadratic form) positive for all real values of the variables, where the values are not all zero.
- positive electron — positron.
- positive eugenics — the study of or belief in the possibility of improving the qualities of the human species or a human population, especially by such means as discouraging reproduction by persons having genetic defects or presumed to have inheritable undesirable traits (negative eugenics) or encouraging reproduction by persons presumed to have inheritable desirable traits (positive eugenics)
- positive feedback — Electronics. the process of returning part of the output of a circuit, system, or device to the input, either to oppose the input (negative feedback) or to aid the input (positive feedback) acoustic feedback.
- positive polarity — the grammatical characteristic of a word or phrase, such as delicious or rather, that may normally only be used in a semantically or syntactically positive or affirmative context
- positive theology — a theological approach or tradition in which the nature of God is thought to be knowable and is understood through positive statements. See also cataphasis (def 2).
- positive thinking — an optimistic attitude
- post-and-rail tea — (in the 19th century) a coarse tea in which floating particles resembled a post-and-rail fence
- post-depositional — removal from an office or position.
- post-independence — Also, independency. the state or quality of being independent.
- post-resurrection — the act of rising from the dead.
- postage due stamp — a stamp that is affixed to mail at a post office when prepayment of postage is insufficient, to indicate the amount that must be collected from the addressee.
- postal stationery — an envelope, postal card, wrapper, or aérogramme, with the stamp printed directly on the paper.
- postbaccalaureate — bachelor's degree.
- postimpressionism — a varied development of Impressionism by a group of painters chiefly between 1880 and 1900 stressing formal structure, as with Cézanne and Seurat, or the expressive possibilities of form and color, as with Van Gogh and Gauguin.
- postmillennialism — the doctrine or belief that the second coming of Christ will follow the millennium.
- poststructuralism — a variation of structuralism, often seen as a critique, emphasizing plurality of meaning and instability of concepts that structuralism uses to define society, language, etc.
- posttranslational — Genetics, Biochemistry. occurring after the synthesis of a polypeptide chain.
- postural drainage — a therapy for clearing congested lungs by placing the patient in a position for drainage by gravity, often accompanied by percussion with hollowed hands.
- potassium acetate — a white, crystalline, deliquescent, water-soluble powder, KC 2 H 3 O 2 , used chiefly as a reagent in analytical chemistry.
- potassium bromate — a white, crystalline, water-soluble powder, KBrO 3 , used chiefly as an oxidizing agent and as an analytical reagent.
- potassium bromide — a white, crystalline, water-soluble powder, KBr, having a bitter saline taste: used chiefly in the manufacture of photographic papers and plates, in engraving, and in medicine as a sedative.
- potassium cyanide — a white, granular, water-soluble, poisonous powder, KCN, having a faint almondlike odor, used chiefly in metallurgy and photography.
- potassium nitrate — a crystalline compound, KNO 3 , produced by nitrification in soil, and used in gunpowders, fertilizers, and preservatives; saltpeter; niter.