18-letter words containing r, h, o, e
- par for the course — an equality in value or standing; a level of equality: The gains and the losses are on a par.
- pass the hat round — to collect money, as for a cause
- pathname separator — (file system) The character used to separate elements of a path or pathname. Under Unix and POSIX.1 compliant systems the pathname separator is the (forward) slash, in MS-DOS backslash serves the same purpose. For obvious reasons the no directory or file name can contain this character.
- patron of the arts — someone who acts as a patron to or supports charities, organizations, and individuals that work in or concern the arts
- pave the way (for) — to prepare the way (for); facilitate the introduction (of)
- peppermint camphor — menthol.
- perish the thought — to die or be destroyed through violence, privation, etc.: to perish in an earthquake.
- peter and the wolf — a composition by Sergei Prokofiev written in 1936. It is a children's story with both music and text, spoken by a narrator accompanied by the orchestra
- peter tschaikowsky — Peter Ilyich [il-yich] /ˈɪl yɪtʃ/ (Show IPA), Tchaikovsky, Peter Ilyich.
- phanerocrystalline — (of a rock) having the principal constituents in the form of crystals visible to the naked eye.
- phoenician juniper — a type of juniper that is found in the Mediterranean region
- phosphatidylserine — any of a class of phospholipids occurring in biological membranes and fats
- photoelectric cell — photocell.
- photoisomerization — isomerization induced by light.
- photomorphogenesis — plant development that is controlled by light.
- physical geography — the branch of geography concerned with natural features and phenomena of the earth's surface, as landforms, drainage features, climates, soils, and vegetation.
- physical inventory — To carry out a physical inventory is to count all the stock on hand.
- pick of the litter — objects strewn or scattered about; scattered rubbish.
- plains grasshopper — a large, destructive short-horned grasshopper, Brachystola magna, of the western U.S., marked by pinkish hind wings.
- planned parenthood — an organization that gives out information on the planning of the number and spacing of the births of one's children, as through the use of birth-control measures
- plight one's troth — to make a promise of marriage
- pollen mother cell — one of the mother cells that produce four microspores by meiosis.
- polyvinyl chloride — a white, water-insoluble, thermoplastic resin, derived by the polymerization of vinyl chloride: used chiefly for thin coatings, insulation, and pipings.
- porter-house steak — Also called porterhouse steak. a choice cut of beef from between the prime ribs and the sirloin.
- positively charged — having a positive charge
- potassium chlorate — a white or colorless, crystalline, water-soluble, poisonous solid, KClO 3 , used chiefly as an oxidizing agent in the manufacture of explosives, fireworks, matches, bleaches, and disinfectants.
- potassium chloride — a white or colorless, crystalline, water-soluble solid, KCl, used chiefly in the manufacture of fertilizers and mineral water, and as a source of other potassium compounds.
- preparatory school — a private or parochial secondary school, especially one boarding its students and providing a college-preparatory education.
- prepare the ground — make conditions ready
- prerelease showing — a showing of a film before it goes on general release
- press photographer — a photographer who works for a newspaper, magazine, etc
- price on sb's head — If there is a price on someone 's head, an amount of money has been offered for the capture or killing of that person.
- prison authorities — the people in charge of running a prison
- probability theory — the theory of analyzing and making statements concerning the probability of the occurrence of uncertain events. Compare probability (def 4).
- process scheduling — multitasking
- processionary moth — a moth of the family Thaumetopoeidae, esp the oak processionary moth (Thaumetopoea processionea), the larvae of which leave the communal shelter nightly for food in a V-shaped procession
- programmer's cheer — (humour) "Shift to the left! Shift to the right! Pop up, push down! Byte! Byte! Byte!" [Origin?]
- projection machine — an apparatus that projects motion pictures; projector.
- prometheus unbound — a drama in verse (1820) by Shelley.
- propaganda machine — the group of people, publications, etc, such as of a government, country etc, responsible for the organized dissemination of information, allegations, etc, to assist or damage the cause of a government, movement, etc
- proprietary rights — rights of ownership
- protease inhibitor — a drug that inhibits the action of protease, especially any of a class of antiviral drugs that prevent the cleavage and replication of HIV proteins.
- provision merchant — a person or company in the business of retailing food and other provisions
- przewalski's horse — a wild horse, Equus caballus przevalskii, chiefly of Mongolia and Sinkiang, characterized by light yellow coloring and a stiff, upright black mane with no forelock: the only remaining breed of wild horse, it is now endangered and chiefly maintained in zoos.
- pseudo-anarchistic — a person who advocates or believes in anarchy or anarchism.
- psychogalvanometer — a type of galvanometer for detecting and measuring psychogalvanic currents.
- psychotherapeutics — psychotherapy.
- puerto rico trench — a depression in the ocean floor, N of Puerto Rico: includes deepest part of Atlantic Ocean, 28,374 feet (8648 meters).
- purchasing officer — the member of staff in an organization who is responsible for buying goods or products
- puss in the corner — a parlor game for children in which one player in the middle of a room tries to occupy any of the positions along the walls that become vacant as other players dash across to exchange places at a signal.