14-letter words containing o, p, t, r
- peritoneoscopy — an endoscopy examining the peritoneal cavity
- peritrichously — in a peritrichous manner; in a fashion characteristic of a peritrichous organism
- perlocutionary — (of a speech act) producing an effect upon the listener, as in persuading, frightening, amusing, or causing the listener to act.
- permanent echo — a radar signal reflected to a radar station on the ground by a building or other fixed object.
- permanent mold — a reusable metal mold used for making a large number of identical castings.
- persian violet — any of several plants belonging to the genus Exacum, native to the Old World, as E. affine, having glossy, ovate leaves, and fragrant, bluish flowers: cultivated as a houseplant.
- personal staff — the aides of a general officer or a flag officer.
- pertinaciously — holding tenaciously to a purpose, course of action, or opinion; resolute.
- perturbational — relating to perturbation
- petrochemicals — substances, such as acetone or ethanol, obtained from petroleum or natural gas
- petrochemistry — the branch of chemistry dealing with petroleum or its products.
- petrol station — A petrol station is a garage by the side of the road where petrol is sold and put into vehicles.
- petrophysicist — a person who studies, or is an expert in, petrophysics
- petworth house — a mansion in Petworth in Sussex: rebuilt (1688–96) for Charles Seymour, 6th Duke of Somerset; gardens laid out by Capability Brown; subject of paintings by Turner
- phallocentrism — a doctrine or belief centered on the phallus, especially a belief in the superiority of the male sex.
- phantasmagoria — a shifting series of phantasms, illusions, or deceptive appearances, as in a dream or as created by the imagination.
- phantasmagoric — having a fantastic or deceptive appearance, as something in a dream or created by the imagination.
- pharmacologist — the science dealing with the preparation, uses, and especially the effects of drugs.
- pharmacopolist — a person who sells pharmaceutical products
- phenobarbitone — a white, crystalline powder, C 1 2 H 1 2 N 2 O 3 , used as a sedative, a hypnotic, and as an antispasmodic in epilepsy.
- phenylthiourea — a crystalline, slightly water-soluble solid, C 6 H 5 NHCSNH 2 , that is either tasteless or bitter, depending upon the heredity of the taster, and is used in medical genetics and as a diagnostic.
- philanthropist — a person who practices philanthropy.
- philanthropize — to treat (persons) in a philanthropic manner.
- philanthropoid — an individual who does work for a charitable body
- philosophaster — a person who has only a superficial knowledge of philosophy or who feigns a knowledge he or she does not possess.
- phonochemistry — the branch of chemistry concerned with the chemical effects of sound and ultrasonic waves
- phonoreception — the physiological perception of sound.
- phosphate rock — phosphorite.
- phosphoprotein — a protein, as casein or ovalbumin, in which one or more hydroxyl groups of serine, threonine, or tyrosine are hydroxylated.
- phosphorescent — exhibiting phosphorescence.
- phosphorolytic — of or relating to phosphorolysis
- photoautotroph — any organism that derives its energy for food synthesis from light and is capable of using carbon dioxide as its principal source of carbon.
- photochemistry — the branch of chemistry that deals with the chemical action of light.
- photoelectrode — an electrode that, following the absorption of light, can initialize electrochemical transformations
- photoengraving — a photographic process of preparing printing plates for letterpress printing.
- photogrammetry — the process of making surveys and maps through the use of photographs, especially aerial photographs.
- photographical — of or relating to photography.
- photoperiodism — the response, as affecting growth or reproduction, of an organism to the length of exposure to light in a 24-hour period.
- photorealistic — a style of painting flourishing in the 1970s, especially in the U.S., England, and France, and depicting commonplace scenes or ordinary people, with a meticulously detailed realism, flat images, and barely discernible brushwork that suggests and often is based on or incorporates an actual photograph.
- photoreception — the physiological perception of light.
- photoreceptive — of or relating to photoreception
- photorecording — the act of making photographic records, especially of documents.
- photoreduction — a reduction reaction induced by light.
- photoresistive — photoconductive
- phototelegraph — of or relating to phototelegraphy
- phytochemistry — the branch of biochemistry dealing with plants and plant processes.
- phytogeography — the science dealing with the geographical relationships of plants.
- piano concerto — a musical piece composed for the piano accompanied by an orchestra
- picture editor — someone whose job is to deal with the photographs and illustrations for a newspaper or magazine
- picture layout — a picture spread. See under spread (def 33).