19-letter words containing p, r, a, e, c
- psychrometric chart — a chart for calculating values of relative humidity, absolute humidity, and dew point from psychrometer readings.
- public-interest law — a branch of law that often utilizes class-action suits to protect the interest of a large group or of the public at large, as in matters relating to racial discrimination, air pollution, etc.
- 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
- pugwash conferences — international peace conferences of scientists held regularly to discuss world problems: Nobel peace prize 1995 awarded to Joseph Rotblat (1908–2005) , one of the founders of the conferences, secretary-general (1957–73), and president (1988–97)
- puncture repair kit — set of tools for patching a bicycle tyre
- quartermaster corps — the branch of the U.S. Army responsible for supplying food, clothing, fuel, and equipment and for the operation of commissaries, laundries, etc.
- radiopharmaceutical — any of a number of radioactive drugs used diagnostically or therapeutically.
- rancho palos verdes — a town in SW California.
- rap on the knuckles — a mild reprimand or light sentence
- reactive depression — depression occurring in response to some situational stress, as loss of one's job.
- reactor temperature — The reactor temperature is the temperature at various stages in a reactor in an FCC unit.
- 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.
- 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 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
- republique malgache — French name of Malagasy Republic.
- 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.
- ring up the curtain — to begin a theatrical performance
- 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
- royal correspondent — a journalist who reports on matters relating to royalty
- 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).
- sanitary protection — Sanitary protection is sanitary towels or tampons.
- santa rosa de copan — a town in W Honduras: site of extensive Mayan ruins.
- scale down (or up) — to reduce (or increase), often according to a fixed ratio or proportion
- scare the pants off — to scare extremely
- secondary picketing — the picketing by strikers of a place of work that supplies goods to or distributes goods from their employer
- secondary processes — the conscious mental activity and logical thinking controlled by the ego and influenced by environmental demands.
- sexual reproduction — reproduction involving the union of gametes.
- sharp-focus realism — photorealism.
- siberian crab apple — a hardy, round-headed tree, Malus baccata, of northern Asia, having white flowers and yellow or red fruit.
- simple carbohydrate — a carbohydrate, as glucose, that consists of a single monosaccharide unit.
- 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.
- slugging percentage — a number expressing a player's average effectiveness in making extra-base hits, calculated by dividing the total number of bases (from all singles, doubles, triples, and home runs) by the number of official at bats
- smoking compartment — a compartment of a train where smoking is permitted
- southern crab apple — a tree, Malus angustifolia, of the eastern U.S., having oblong leaves, fragrant, pink or rose-colored flowers, and small, round, yellow-green fruit.
- spanish west africa — a former overseas territory of Spain in NW Africa: divided in 1958 into the overseas provinces of Ifni and Spanish Sahara
- special air service — a regiment in the British Army specializing in clandestine operations
- special partnership — limited partnership.
- specific characters — the persistent features that distinguish one species from all others
- specific resistance — resistivity (def 2).
- specific-resistance — the power or property of resistance.