17-letter words containing t, h, o, r
- out of this world — the earth or globe, considered as a planet.
- overhead camshaft — a camshaft in an automotive engine that is located in the cylinder head over the engine block rather than in the block. Abbreviation: OHC.
- overhead lighting — lighting which throws light downwards by being situated on the ceiling or having a downward shade, etc
- overnight success — sth or sb suddenly popular
- overstep the mark — If someone oversteps the mark, they behave in a way that is considered unacceptable.
- oystershell scale — a scale insect, Lepidosaphes ulmi, having a scale shaped like the shell of an oyster, which infests various deciduous trees and shrubs.
- pacific northwest — the region of North America lying north of the Columbia River and west of the Rockies
- pair annihilation — Physics. annihilation (def 3a).
- paleoanthropology — the study of the origins and predecessors of the present human species, using fossils and other remains.
- paleobiochemistry — the study of biochemical processes that occurred in fossil life forms.
- parathyroid gland — any of several small oval glands usually lying near or embedded in the thyroid gland.
- parathyroidectomy — the excision of a parathyroid gland.
- paratyphoid fever — Also called paratyphoid fever. an infectious disease, similar in some of its symptoms to typhoid fever but usually milder, caused by any of several bacilli of the genus Salmonella other than S. typhi.
- pastoral symphony — the Symphony No. 6 in F major (1807–08) by Ludwig van Beethoven.
- pastoral theology — the branch of theology dealing with the responsibilities of members of the clergy to the people under their care.
- pathological liar — a person who tells lies frequently, with no rational motive for doing so.
- patriarchal cross — a Latin cross having a shorter crosspiece above the customary one.
- peer of the realm — any of a class of peers in Great Britain and Ireland entitled by heredity to sit in the House of Lords.
- pentachlorophenol — a white, crystalline, water-insoluble powder, C 6 Cl 5 OH, used chiefly in fungicides, disinfectants, and wood preservatives.
- perchloroethylene — tetrachloroethylene.
- personality clash — friction between two people who have different personalities or points of view
- perth and kinross — a council area of N central Scotland, corresponding mainly to the historical counties of Perthshire and Kinross-shire: part of Tayside Region from 1975 until 1996: chiefly mountainous, with agriculture, tourism, and forestry. Administrative centre: Perth. Pop: 135 990 (2003 est). Area: 5321 sq km (2019 sq miles)
- petrarchan sonnet — a sonnet form popularized by Petrarch, consisting of an octave with the rhyme scheme abbaabba and of a sestet with one of several rhyme schemes, as cdecde or cdcdcd.
- phantom pregnancy — the occurrence of signs of pregnancy, such as enlarged abdomen and absence of menstruation, when no embryo is present, due to hormonal imbalance
- philanthropically — of, pertaining to, engaged in, or characterized by philanthropy; benevolent: a philanthropic foundation.
- phlebotomus fever — sandfly fever.
- photo opportunity — a brief period set aside for the media to take photographs of a high government official or celebrity, usually immediately before or after a newsworthy event.
- photo-respiration — the oxidation of carbohydrates in many higher plants in which they get oxygen from light and then release carbon dioxide, somewhat different from photosynthesis.
- photofluorography — photography of images produced by a fluoroscopic examination, used in x-ray examination of the lungs of large groups of people.
- photoreactivation — a process that repairs DNA damaged by ultraviolet light using an enzyme that requires visible light.
- phototherapeutics — the branch of therapeutics that deals with the curative use of light rays.
- pitching rotation — the regular, scheduled succession of starting pitchers designated by a manager: a four-man pitching rotation in September.
- platinic chloride — chloroplatinic acid.
- plymouth brethren — a religious sect founded c. 1827, strongly Puritanical in outlook and prohibiting many secular occupations for its members. It combines elements of Calvinism, Pietism, and millenarianism, and has no organized ministry
- point of purchase — designating or in use at a retail outlet where an item can be purchased; point-of-sale: point-of-purchase displays to entice the buyer.
- point-of-purchase — designating or in use at a retail outlet where an item can be purchased; point-of-sale: point-of-purchase displays to entice the buyer.
- police helicopter — a helicopter used in police operations, for example in traffic control, or for observation
- polystyrene chips — small pieces of polystyrene used for insulating or packing
- porterhouse steak — large cut of beef loin
- portmanteau morph — a phonological unit of more than one morpheme, as French au to (him) from a to + le masculine article, which realizes a preposition and the definite article; a single morph that is analyzed as representing two underlying morphemes.
- potato leafhopper — any of various leafhoppers that are serious pests, damaging a wide variety of cultivated and wild plants, especially potatoes.
- pre-authorization — the act of authorizing.
- pre-technological — of or relating to technology; relating to science and industry.
- preferential shop — a shop in which union members are preferred, usually by agreement of an employer with a union.
- priority check-in — Priority check-in at a hotel is an arrangement which allows a guest to check in without waiting in a line.
- private ownership — the fact of being owned by a private individual or organization, rather than by the state or a public body
- prohibition party — a U.S. political party organized in 1869, advocating the prohibition of the manufacture and sale of alcoholic beverages.
- protein synthesis — the process by which amino acids are linearly arranged into proteins through the involvement of ribosomal RNA, transfer RNA, messenger RNA, and various enzymes.
- prothoracic gland — either of a pair of endocrine glands in the anterior thorax of some insects, functioning to promote the series of molts from hatching to adulthood.
- pseudo-historical — of, pertaining to, treating, or characteristic of history or past events: historical records; historical research.