20-letter words containing i, s, r
- potassium bichromate — an orange-red, crystalline, water-soluble, poisonous powder, K 2 Cr 2 O 7 , used chiefly in dyeing, photography, and as a laboratory reagent.
- potassium bitartrate — cream of tartar.
- 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
- potassium-bitartrate — a white, crystalline, water-soluble powder, C 4 H 5 KO 6 , used chiefly as an ingredient in baking powders and in galvanic tinning of metals. Also called potassium bitartrate, potassium acid tartrate. Compare tartar (def 3).
- 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
- precision instrument — finely-tuned device
- prefecture apostolic — a territory in the early stage of missionary development.
- premenstrual tension — Premenstrual tension is the same as premenstrual syndrome. The abbreviation PMT is often used.
- prepatellar bursitis — inflammation and swelling of the bursa in front of the kneecap, caused esp by constant kneeling on a hard surface
- prepositional phrase — a phrase consisting of a preposition, its object, which is usually a noun or a pronoun, and any modifiers of the object, as in the gray desk I use.
- prescription glasses — corrective spectacles
- prescriptive grammar — an approach to grammar that is concerned with establishing norms of correct and incorrect usage and formulating rules based on these norms to be followed by users of the language.
- presentation manager — The elephantine graphical user interface to the OS/2 operating system.
- 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.
- price discrimination — the practice of offering identical goods to different buyers at different prices, when the goods cost the same.
- price-earnings ratio — the current price of a share of common stock divided by earnings per share over a 12-month period, often used in stock evaluation. Abbreviation: p/e.
- 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.
- 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.
- princeton university — (body, education) Chartered in 1746 as the College of New Jersey, Princeton was British North America's fourth college. First located in Elizabeth, then in Newark, the College moved to Princeton in 1756. The College was housed in Nassau Hall, newly built on land donated by Nathaniel and Rebeckah FitzRandolph. Nassau Hall contained the entire College for nearly half a century. The College was officially renamed Princeton University in 1896; five years later in 1900 the Graduate School was established. Fully coeducational since 1969, Princeton now enrolls approximately 6,400 students (4,535 undergraduates and 1,866 graduate students). The ratio of full-time students to faculty members (in full-time equivalents) is eight to one. Today Princeton's main campus in Princeton Borough and Princeton Township consists of more than 5.5 million square feet of space in 160 buildings on 600 acres. The University's James Forrestal Campus in Plainsboro consists of one million square feet of space in four complexes on 340 acres. As Mercer County's largest private employer and one of the largest in the Mercer/Middlesex/Somerset County region, with approximately 4,830 permanent employees - including more than 1,000 faculty members - the University plays a major role in the educational, cultural, and economic life of the region.
- private investigator — private detective. Abbreviation: PI, p.i., P.I.
- prohibited substance — a substance, such as a drug, etc, that is banned or forbidden by law or other authority
- property speculation — the buying or selling of property in the hope of deriving capital gains
- proportional spacing — a feature of some typewriters and other output devices whereby the space allotted to each character is determined by the width of the character
- prosecuting attorney — the public officer in a county, district, or other jurisdiction charged with carrying on the prosecution in criminal proceedings.
- prosthetic dentistry — prosthodontics.
- psychiatric hospital — institution treating mental disorders
- psychometric testing — the use of psychometric tests, often as a selection method
- psychomotor epilepsy — temporal-lobe epilepsy.
- public administrator — an official of a city, county, or state government.
- pyrenees-atlantiques — a department in SW France. 2978 sq. mi. (7710 sq. km). Capital: Pau.
- pyroligneous alcohol — methyl alcohol.
- quaker meeting house — a place where Quakers gather for worship
- quasi-stellar object — quasar. Abbreviation: QSO.
- rachel louise carson — Christopher ("Kit") 1809–68, U.S. frontiersman and scout.
- radiation resistance — the resistive component of the impedance of a radio transmitting aerial that arises from the radiation of power
- raise one's glass to — to drink the health of; drink a toast to
- rapid transit system — a rail or other system providing rapid public transport
- rattlesnake plantain — any of several low, terrestrial orchids, as Goodyera repens, of northern temperate regions, having a basal rosette of leaves with white veins and a one-sided spike of white flowers.
- real-estate register — (in the United States) an annual directory that lists available properties and provides contact details for real estate companies
- real-time processing — data-processing by a computer which receives constantly changing data, such as information relating to air-traffic control, travel booking systems, etc, and processes it sufficiently rapidly to be able to control the source of the data
- receivables turnover — A receivables turnover is a measure of cash flow that is calculated by dividing net credit sales by average accounts receivable.
- reciprocal insurance — insurance in which members of a reciprocal exchange, acting through an attorney-in-fact, insure themselves and each other.
- recursive definition — a definition consisting of a set of rules such that by repeated application of the rules the meaning of the definiendum is uniquely determined in terms of ideas that are already familiar.
- recursive subroutine — a subroutine that can call itself as part of its execution
- red mercuric sulfide — a crystalline, water-insoluble, poisonous compound, HgS, occurring as a coarse, black powder (black mercuric sulfide) or as a fine, bright-scarlet powder (red mercuric sulfide) used chiefly as a pigment and as a source of the free metal.
- reductio ad absurdum — a reduction to an absurdity; the refutation of a proposition by demonstrating the inevitably absurd conclusion to which it would logically lead.
- reflecting telescope — an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens set into one end of a tube and an adjustable eyepiece or combination of lenses set into the other end of a tube that slides into the first and through which the enlarged object is viewed directly; the other form (reflecting telescope) has a concave mirror that gathers light from the object and focuses it into an adjustable eyepiece or combination of lenses through which the reflection of the object is enlarged and viewed. Compare radio telescope.