19-letter words containing p, o, r, i, c
- projective property — a geometric property that is unaltered by projection; a property of relative position, as coincidence or length, but not of magnitude.
- promotion prospects — the chances or prospects an employee has for promotion or for gaining a better position, often in the same company
- promotions director — someone in charge of encouraging the sale of (a product) by advertising or securing financial support
- propositional logic — (logic) (or "propositional calculus") A system of symbolic logic using symbols to stand for whole propositions and logical connectives. Propositional logic only considers whether a proposition is true or false. In contrast to predicate logic, it does not consider the internal structure of propositions.
- proton-proton chain — a series of thermonuclear reactions, responsible for the energy production in stars like the sun, in which the nuclei of hydrogen atoms are transformed into helium nuclei by sequential addition of single hydrogen nuclei.
- pseudo-aristocratic — of or relating to government by an aristocracy.
- pseudo-biographical — of or relating to a person's life: He's gathering biographical data for his book on Milton.
- pseudo-conservative — disposed to preserve existing conditions, institutions, etc., or to restore traditional ones, and to limit change.
- pseudo-hieroglyphic — noting or pertaining to a script dating from the second millennium b.c. that appears to be syllabic and to represent the Phoenician language and that is inscribed on objects found at Byblos.
- psychoendocrinology — the study of the relationship between the endocrine system and various symptoms or types of mental illness.
- psychrometric chart — a chart for calculating values of relative humidity, absolute humidity, and dew point from psychrometer readings.
- puerperal psychosis — a mental disorder sometimes occurring in women after childbirth, characterized by deep depression, delusions of the child's death, and homicidal feelings towards the child
- pyrophosphoric acid — a crystalline, water-soluble powder, H 4 P 2 O 7 , formed by the union of one molecule of phosphorus pentoxide with two molecules of water.
- radiochromatography — chromatography in which radiolabeled substances on the chromatogram are determined quantitatively or qualitatively by measuring their radioactivity.
- radiopharmaceutical — any of a number of radioactive drugs used diagnostically or therapeutically.
- reactive depression — depression occurring in response to some situational stress, as loss of one's job.
- reception committee — an organized gathering of people to welcome a visitor
- reciprocal exchange — an unincorporated association formed so that its members can participate in reciprocal insurance.
- reciprocal leveling — leveling between two widely separated points in which observations are made in both directions to eliminate the effects of atmospheric refraction and the curvature of the earth.
- reciprocity failure — a failure of the two exposure variables, light intensity and exposure time, to behave in a reciprocal fashion at very high or very low values
- reconceptualization — to form into a concept; make a concept of.
- recording equipment — devices used for sound reproduction
- reduction potential — (in a galvanic cell) the potential of the electrode at which reduction occurs.
- relative complement — the set of elements contained in a given set that are not elements of another specified set.
- relocation expenses — Relocation expenses are a sum of money that a company pays to someone who moves to a new area in order to work for the company. The money is to help them pay for moving house.
- repeat prescription — A repeat prescription is a prescription for a medicine that you have taken before or that you use regularly.
- republic of ireland — John, 1838–1918, U.S. Roman Catholic clergyman and social reformer, born in Ireland: archbishop of St. Paul, Minn., 1888–1918.
- republic of letters — the collective body of literary people.
- republic of vietnam — the name (from 1955–75) for South Vietnam, as an independent republic, following the division of the country in 1954 into North Vietnam and South Vietnam
- research fellowship — the position or office of someone who conducts academic research into a subject at a university, etc
- reserved occupation — in time of war, an occupation from which one will not be called up for military service
- resorcinolphthalein — fluorescein.
- rock-paper-scissors — a method of selecting, for example, which of two people perform a task: each person simultaneously makes one of three hand gestures representing a rock, a sheet of paper, and a pair of scissors respectively. Each gesture defeats one and is defeated by one of the other two: rock defeats scissors but is defeated by paper; paper defeats rock but is defeated by scissors. The person whose gesture defeats the other is selected
- ruffini's corpuscle — an end organ of certain sensory neurons that branches out parallel to the skin and responds to steady pressure.
- sacrifice operative — a euphemistic term for a suicide bomber
- san francisco peaks — a mountain mass in N Arizona: highest point in the state, Humphrey's Peak, 12,611 feet (3845 meters).
- san juan capistrano — a city in SW California: site of old Spanish mission; known for annual return of swallows, said to occur on March 19.
- sanitary protection — Sanitary protection is sanitary towels or tampons.
- secondary picketing — the picketing by strikers of a place of work that supplies goods to or distributes goods from their employer
- sexual reproduction — reproduction involving the union of gametes.
- sharp-focus realism — photorealism.
- silk-screen process — Also called silkscreen process. a printmaking technique in which a mesh cloth is stretched over a heavy wooden frame and the design, painted on the screen by tusche or affixed by stencil, is printed by having a squeegee force color through the pores of the material in areas not blocked out by a glue sizing.
- simple carbohydrate — a carbohydrate, as glucose, that consists of a single monosaccharide unit.
- simple closed curve — a curve that is closed and that has no loops or points missing; a curve for which there exists a homeomorphism mapping it to a circle.
- single-cell protein — a protein produced or derived from the culture of a single-celled organism, used as a food supplement or substitute. Abbreviation: SCP.
- sleepy hollow chair — an armchair of the mid-19th century, sometimes on rockers, having a single piece forming a high upholstered back and a concave upholstered seat.
- smoking compartment — a compartment of a train where smoking is permitted
- social anthropology — study of human culture
- sodium hypochlorite — a pale-green, crystalline compound, NaOCl, unstable in air, soluble in cold water, decomposes in hot water: used as a bleaching agent for paper and textiles, in water purification, in household use, and as a fungicide.
- specular reflection — Specular reflection is reflection of heat or light in which the angles of different parts of the surface are important.