17-letter words containing p, a, t, c, h, o
- photodissociation — the dissociation or breakdown of a chemical compound by radiant energy.
- 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.
- photovoltaic cell — a photocell in which an electromotive force is generated by a photovoltaic effect.
- pincushion cactus — any of various low-growing, spiny cacti of the genus Mammillaria.
- pitching rotation — the regular, scheduled succession of starting pitchers designated by a manager: a four-man pitching rotation in September.
- platinic chloride — chloroplatinic acid.
- pocket battleship — a small heavily armed and armored warship serving as a battleship because of limitations imposed by treaty.
- 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.
- polioencephalitis — a disease characterized by inflammation of the gray matter of the brain.
- pre-technological — of or relating to technology; relating to science and industry.
- 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.
- pseudo-humanistic — a person having a strong interest in or concern for human welfare, values, and dignity.
- psychodiagnostics — the study and evaluation of character or personality in terms of behavioral and anatomical traits, as gesture, posture and physiognomy.
- psychoeducational — designating or of psychological methods, as intelligence tests, used in evaluating learning ability
- psychotherapeutic — psychotherapy.
- pythagorean scale — the major scale as derived acoustically by Pythagoras from the perfect fifth.
- respiratory chain — a series of mitochondrial proteins that transport electrons of hydrogen, released in the Krebs cycle, from acetyl coenzyme A to inhaled oxygen to form H 2 O: the energy released in the process is conserved as ATP.
- reticulate python — a python, Python reticulatus, of southeastern Asia and the East Indies, sometimes growing to a length of 32 feet (10 meters): usually considered to be the largest snake in the world.
- roll with a punch — to move in the same direction as a punch thrown at one so as to lessen its force
- saint christopher — Saint, died a.d. c250, Christian martyr.
- semisophisticated — somewhat sophisticated.
- shooting practice — practice in shooting for soldiers or other people who shoot guns
- shortcrust pastry — a basic type of pastry that is made with half the quantity of fat to flour, and has a crisp but crumbly texture
- shuttle diplomacy — diplomatic negotiations carried out by a mediator who travels back and forth between the negotiating parties.
- south sea company — a British joint stock company that traded in South America in the 18th century. The South Sea Company took over the national debt in return for a monopoly of trade with the South Seas, causing feverish speculation in their stocks, and a financial crash in 1720 (the South Sea Bubble)
- spaghettification — the theoretical stretching of an object as it encounters extreme differences in gravitational forces, especially those associated with a black hole.
- spectroheliograph — an apparatus for making photographs of the sun with a monochromatic light to show the details of the sun's surface and surroundings as they would appear if the sun emitted only that light.
- spit in the ocean — a variety of poker in which four cards are dealt face down to each player and one card, forming the fifth for all hands, is dealt face up in the center of the table, the exposed card and others of its denomination being wild cards.
- spoonbill catfish — flathead catfish.
- steamship company — a company which has a fleet of steamships
- support mechanism — any formal system or method of providing support or assistance
- take the place of — replace, be a substitute for
- teaching hospital — a hospital associated with a medical college and offering clinical and other facilities to those in various areas of medical study, as students, interns, and residents.
- technical support — an advising and troubleshooting service provided by a manufacturer, typically a software or hardware developer, to its customers, often online or on the telephone.
- the electoral map — a map showing the distribution of constituencies over a country
- the glacial epoch — the Pleistocene Epoch
- the olympic flame — the flame that is symbolically lit at the site of the ancient Olympics in Olympia and transported by relay to the place where the Olympic Games are to be held. It is used to ignite a fire in a cauldron that will burn throughout the Games
- the peace process — negotiations (between governments, countries, ect) towards peace or the resolution of a conflict
- the south pacific — the part of the Pacific Ocean to the south of the equator
- thematic approach — teaching organized by theme rather than by school subject
- therapeutic touch — the laying on of hands by a healer
- thousandths-place — last in order of a series of a thousand.
- throat microphone — a microphone worn around the throat and actuated by vibrations of the larynx, used when background noise would obscure the sound of speech, as in an airplane cockpit.
- to keep the peace — If someone in authority, such as the army or the police, keeps the peace, they make sure that people behave and do not fight or quarrel with each other.
- trick photography — photography that creates an illusion
- turbosupercharger — (formerly) a turbocharger.
- upper paleolithic — See under Paleolithic.