18-letter words containing p, o
- bore the pants off — to bore extremely
- born to the purple — being of royal or high birth
- bottlenose dolphin — any dolphin of the genus Tursiops, esp T. truncatus, some of which have been kept in captivity and trained to perform tricks
- boundedly complete — (theory) (Or "consistently complete") In domain theory, a complete partial order is boundedly complete if every bounded subset has a least upper bound.
- brand-name product — A brand-name product is one which is made by a well-known manufacturer and has the manufacturer's label on it.
- broad-leaved maple — a maple, Acer macrophyllum, of western North America, characterized by dark green, thickened leaves that may reach 12 inches (30 cm) or more in width.
- burkitt's lymphoma — a cancer characterized by tumors containing lymphoid cells, occurring esp. in children, in the jaw, eyes, and internal organs: it is associated with the Epstein-Barr virus
- byte-code compiler — (programming, tool) A compiler which outputs a program in some kind of byte-code. Compare: byte-code interpreter.
- c-reactive protein — a globulin in the blood produced by the liver in response to inflammation
- calcium propionate — a white, water-soluble powder, CaC 6 H 10 O 4 , used in bakery products to inhibit the growth of fungi.
- calliper compasses — an instrument for measuring internal or external dimensions, consisting of two steel legs hinged together
- camp david accords — a peace treaty between Israel and Egypt issuing from talks at Camp David between Egyptian President Sadat, Israeli Prime Minister Begin, and the host, U.S. President Carter: signed in 1979.
- cap of maintenance — a ceremonial cap or hat worn or carried as a symbol of office, rank, etc
- cape breton island — an island off SE Canada, in NE Nova Scotia, separated from the mainland by the Strait of Canso: its easternmost point is Cape Breton. Pop: 132 298 (2006). Area: 10 280 sq km (3970 sq miles)
- capital allowances — the money spent by a company on fixed assets which can be taken off the profits of the company before tax is imposed
- captain james cook — Frederick Albert, 1865–1940, U.S. physician and polar explorer.
- career development — a progression through a series of jobs, each with more responsibility and a higher income than the last
- carpenterworm moth — any moth of the family Cossidae, as Prionoxystus robiniae of the U.S. and southern Canada, whose larvae bore into the trunks and branches of oaks, locusts, and other trees.
- cassiopeia's chair — the five brightest stars in the constellation Cassiopeia that seem to form the shape of a W or M
- castration complex — an unconscious fear of having one's genitals removed, as a punishment for wishing to have sex with a parent
- catastrophe theory — a mathematical theory that classifies surfaces according to their form
- cathode dark space — Crookes dark space.
- cellular telephone — a mobile phone
- central projection — a projection of one plane onto a second plane such that a point on the first plane and its image on the second plane lie on a straight line through a fixed point not on either plane.
- centre of pressure — the point in a body at which the resultant pressure acts when the body is immersed in a fluid
- chagos archipelago — group of islands in the Indian Ocean 1,180 mi (1,899 km) northeast of Mauritius, comprising the British Indian Ocean Territory: chief island, Diego Garcia
- championship point — a point that would decide the winner of a match that would decide the championship
- change one's spots — to reform one's character
- checkpoint charlie — a crossing between East and West Berlin during the Cold War
- chemical potential — a thermodynamic function of a substance in a system that is the partial differential of the Gibbs function of the system with respect to the number of moles of the substance
- child psychologist — a psychologist who specializes in treating children
- chloroacetophenone — a white, crystalline, water-insoluble, poisonous solid, C 8 H 7 ClO, used in solution as a tear gas. Abbreviation: CN.
- christmas shopping — shopping especially for Christmas presents, but also for Christmas food and drink, and all the other things required over the Christmas period.
- christopher sholes — Christopher Latham [ley-thuh m,, -th uh m] /ˈleɪ θəm,, -ðəm/ (Show IPA), 1819–90, U.S. inventor of the typewriter.
- chromatic printing — printing from blocks or types inked with various colours
- chromolithographer — One engaged in chromolithography.
- chromolithographic — Pertaining to, or made by, chromolithography.
- chronostratigraphy — The branch of geology concerned with establishing the absolute ages of strata.
- claustrophobically — In a claustrophobic way.
- clean up one's act — to start to behave in a responsible manner
- cleopatra's needle — either of two Egyptian obelisks, originally set up at Heliopolis about 1500 bc: one was moved to the Thames Embankment, London, in 1878, the other to Central Park, New York, in 1880
- clew down (or up) — to lower (or raise) a sail by means of clew lines
- clinical pathology — the branch of pathology dealing with the study of disease and disease processes by means of chemical, microscopic, and serologic examinations.
- closed corporation — a corporation the stock of which is owned by a small number of persons and is rarely traded on the open market
- closed scholarship — a scholarship for which only certain people, such as those from a particular school or with a particular surname, are eligible
- cobalt violet deep — a medium to strong purple color.
- cock-a-leekie soup — a soup made from a fowl boiled with leeks
- coitus interruptus — the deliberate withdrawal of the penis from the vagina before ejaculation
- color transparency — a positive color image photographically produced on transparent film or glass and viewed by transmitted light, usually by projection.
- colour photography — the art or process of taking and developing photographs in colour