15-letter words containing p, e, r, l, o, c
- paraheliotropic — (of leaves) turning away from light; sun-avoiding
- parallel cousin — a cousin who is the child either of one's mother's sister or of one's father's brother.
- passifloraceous — of, relating to, or belonging to the Passifloraceae, a tropical and subtropical family of climbing plants including the passionflowers: the flowers have five petals and threadlike parts forming a dense mass (corona) around the central disc
- pastel-coloured — pale-coloured; in a shade such as pink or pale blue
- pavel petrovich — Paul I (def 2).
- pectoral girdle — (in vertebrates) a bony or cartilaginous arch supporting the forelimbs.
- pectoral muscle — muscle of the chest
- peculiar people — a small sect of faith healers founded in London in 1838, having no ministers or external organization
- pelargonic acid — a colorless, oily, water-immiscible liquid, C 9 H 1 8 O 2 , occurring as an ester in a volatile oil in species of pelargonium: used chiefly in organic synthesis and in the manufacture of lacquers and plastics.
- pellicle mirror — a fixed mirror in a single-lens reflex camera that reflects some of the light entering the lens to the ground-glass view screen while permitting most of the light to pass through to the film.
- perchloric acid — a colorless, syrupy hygroscopic liquid, HClO 4 , an acid of chlorine containing one more oxygen atom than chloric acid: used chiefly as a reagent in analytical chemistry.
- perchloroethane — hexachloroethane.
- percussion lock — a gunlock on a firearm that fires by striking a percussion cap.
- percussion tool — a power driven tool which operates by striking rapid blows: the power may be electricity or compressed air
- perfluorocarbon — a fluorocarbon consisting only of fluorine and carbon atoms
- perissosyllabic — (of a line of verse) containing more syllables than expected for the metre being used
- peroxysulphuric — as in peroxysulphuric acid
- person of color — the quality of an object or substance with respect to light reflected by the object, usually determined visually by measurement of hue, saturation, and brightness of the reflected light; saturation or chroma; hue.
- personal column — The personal column in a newspaper or magazine contains messages for individual people and advertisements of a private nature.
- phenylketonuric — an inherited disease due to faulty metabolism of phenylalanine, characterized by phenylketones in the urine and usually first noted by signs of mental retardation in infancy.
- phlebosclerosis — sclerosis, or hardening, of the walls of veins.
- phloem necrosis — a disease of the American elm caused by a mycoplasmalike organism, characterized by yellowing and necrosis of the foliage and yellowish-brown discoloration of the phloem.
- photoelectronic — relating to electronic effects or devices affected by light
- phrenologically — in a manner relating to phrenology
- physical memory — (memory management) The memory hardware (normally RAM) installed in a computer. The term is only used in contrast to virtual memory.
- plastic surgeon — doctor who performs cosmetic surgery
- platform rocker — a rocking chair supported on a stationary base
- platform scales — a weighing machine which has a platform that you put something on to be weighed
- platform ticket — a pass allowing a visitor to enter upon a railroad platform from which those not traveling are ordinarily excluded.
- pleochroic halo — a dark-colored, microscopic ring around a minute radioactive particle in certain mineral crystals, used in estimating the age of the rocks containing these crystals
- police marksman — a police officer skilled in precision shooting, esp with a sniper rifle
- police presence — attendance or proximity of police officers
- police reporter — a news reporter assigned to cover a police department for newsworthy events.
- polycarboxylate — a salt or ester of a polycarboxylic acid. Polycarboxylate esters are used in certain detergents
- polychlorinated — having multiple chlorine atoms
- polychloroprene — a chloroprene polymer
- polycrystalline — (of a rock or metal) composed of aggregates of individual crystals.
- polyelectrolyte — an electrolyte of high molecular weight, usually polymeric, either natural or synthetic.
- popular culture — cultural activities or commercial products reflecting, suited to, or aimed at the tastes of the general masses of people.
- portland cement — a type of hydraulic cement usually made by burning a mixture of limestone and clay in a kiln.
- pre-celebration — an act of celebrating.
- pre-contractual — a preexisting contract that legally prevents a person from making another contract of the same nature.
- precinct police — the police responsible for a district of a city
- preconceptional — a conception or opinion formed beforehand.
- predicate logic — (logic) (Or "predicate calculus") An extension of propositional logic with separate symbols for predicates, subjects, and quantifiers. For example, where propositional logic might assign a single symbol P to the proposition "All men are mortal", predicate logic can define the predicate M(x) which asserts that the subject, x, is mortal and bind x with the universal quantifier ("For all"): All x . M(x) Higher-order predicate logic allows predicates to be the subjects of other predicates.
- prenflo process — The PRENFLO process is a gasification process to convert substances such as oil, gas, coal, and refinery residue into synthetic gas.
- price inflation — inflation fuelled by rising prices
- prince of wales — Prince of Wales and Duke of Cornwall ("The Black Prince") 1330–76, English military leader (son of Edward III).
- problematically — of the nature of a problem; doubtful; uncertain; questionable.
- process control — a method of controlling and improving a process using statistical analysis