9-letter words containing p, r, o, n
- phenogram — a diagram depicting taxonomic relationships among organisms based on overall similarity of many characteristics without regard to evolutionary history or assumed significance of specific characters: usually generated by computer.
- pheromone — any chemical substance released by an animal that serves to influence the physiology or behavior of other members of the same species.
- phlorizin — a bitter, crystalline glucoside, C 2 1 H 2 4 O 1 0 , obtained from the root bark of the apple, pear, cherry, etc.: formerly used as a tonic and in the treatment of malaria; now used chiefly in biochemical research.
- phonatory — rapid, periodic opening and closing of the glottis through separation and apposition of the vocal cords that, accompanied by breath under lung pressure, constitutes a source of vocal sound.
- phonecard — calling card (def 3).
- phonogram — a unit symbol of a phonetic writing system, standing for a speech sound, syllable, or other sequence of speech sounds without reference to meaning.
- phonopore — a device that conveys sound using electrical impulses along telegraph lines
- phony war — (in wartime) a period of apparent calm and inactivity, esp the period at the beginning of World War II
- phronesis — wisdom in determining ends and the means of attaining them.
- phytotron — a building in which plants can be grown on a large scale, under controlled conditions
- piano bar — a cocktail lounge featuring live piano music.
- pickaroon — to act or operate as a pirate or brigand.
- pied noir — an Algerian-born French person.
- pignorate — to pledge or pawn
- pinedrops — a slender, leafless, parasitic North American plant, Pterospora andromedea, having nodding white to red flowers, found growing under pines.
- pinhooker — someone who trades in young racehorses for profit
- pink root — a disease of onions and other plants, characterized by pink, withered roots, caused by a fungus, Pyrenochaeta terrestris.
- pinkerton — Allan, 1819–84, U.S. detective, born in Scotland.
- pioneered — a person who is among those who first enter or settle a region, thus opening it for occupation and development by others.
- piperonal — a white, crystalline, water-insoluble aldehyde, C 8 H 6 O 3 , which darkens on exposure to light: used chiefly in perfumery and organic synthesis.
- plainwork — simple needlework, such as hemming, as distinct from fancywork
- planiform — having a flattened shape, as an anatomical joint.
- polverine — a glassmaker's potash
- polyandry — the practice or condition of having more than one husband at one time. Compare monandry (def 1).
- pomerania — a former province of NE Germany, now mostly in NW Poland.
- ponderate — deliberate or intentional
- pondering — to consider something deeply and thoroughly; meditate (often followed by over or upon).
- ponderosa — a North American pine tree
- ponderous — of great weight; heavy; massive.
- ponograph — an instrument for graphically recording pain or muscular fatigue.
- pontonier — an officer or soldier in charge of bridge equipment or the construction of pontoon bridges.
- poppering — a type of pear tree
- porbandar — a seaport in SW Gujarat, in W India.
- porcelain — a strong, vitreous, translucent ceramic material, biscuit-fired at a low temperature, the glaze then fired at a very high temperature.
- porcupine — any of several rodents covered with stiff, sharp, erectile spines or quills, as Erethizon dorsatum of North America.
- poriferan — any animal of the phylum Porifera, comprising the sponges.
- porphyrin — a dark red, photosensitive pigment consisting of four pyrrole rings linked by single carbon atoms: a component of chlorophyll, heme, and vitamin B 1 2 .
- porringer — a low dish or cup, often with a handle, from which soup, porridge, or the like is eaten.
- portadown — a town in S Northern Ireland, in the district of Armagh. Pop: 25 958 (2001)
- portinari — Cândido [kahn-dee-doo] /ˈkɑ̃ di dʊ/ (Show IPA), 1903–62, Brazilian painter.
- portioner — a person who receives or holds a portion, or who divides something into portions.
- portofino — a village in NW Italy, SE of Genoa: tourist resort.
- portolani — a descriptive atlas of the Middle Ages, giving sailing directions and providing charts showing rhumb lines and the location of ports and various coastal features.
- portolano — a descriptive atlas of the Middle Ages, giving sailing directions and providing charts showing rhumb lines and the location of ports and various coastal features.
- post horn — a straight or coiled copper or brass horn with no valves or slide, originally used to announce mail coaches.
- posturing — the relative disposition of the parts of something.
- pothering — commotion; uproar.
- pothunter — a person who hunts for food or profit, ignoring the rules of sport.
- pottering — putter1 .
- pottinger — an apothecary