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17-letter words containing t, r, a, p

  • antiprostaglandin — A prostaglandin inhibitor.
  • antivirus program — antivirus software
  • apartment complex — An apartment complex is a group of buildings that contain apartments and are managed by the same company.
  • aperture priority — an automatic exposure system in which the photographer selects the aperture and the camera then automatically sets the correct shutter speed
  • aperture-priority — of or relating to a semiautomatic exposure system in which the photographer presets the aperture and the camera selects the shutter speed.
  • api gravity scale — the American Petroleum Institute gravity scale: a universally accepted scale of the relative density of fluids that is used in fuel technology and is measured in degrees API. One degree API is equal to (141.5/d)–131.5, where d = relative density at 288.7K
  • apostolic fathers — the Fathers of the early Church who immediately followed the Apostles
  • appalachian trail — hiking trail extending from central Me. to N Ga., along the Appalachian Mountains: c. 2,050 mi (3,299 km)
  • apparent movement — the sensation of seeing movement when nothing actually moves in the environment, as when two neighbouring lights are switched on and off in rapid succession
  • application layer — (networking)   The top layer of the OSI seven layer model. This layer handles issues like network transparency, resource allocation and problem partitioning. The application layer is concerned with the user's view of the network (e.g. formatting electronic mail messages). The presentation layer provides the application layer with a familiar local representation of data independent of the format used on the network.
  • appointed actuary — An appointed actuary is an actuary appointed by a life insurance company, whose main role is to carry out a regular valuation of the reserves held to pay future policy benefits.
  • aromatic compound — an organic compound that contains one or more benzene or equivalent heterocyclic rings: many such compounds have an agreeable odor.
  • articulatory loop — a short-term memory system that enables a person to remember short strings of words by rehearsing them repeatedly in his head
  • artificial person — a human being, whether an adult or child: The table seats four persons.
  • astral projection — the departure of the astral body from the physical body, in order to travel to the astral plane
  • astrophotographer — A person, especially an astronomer, who takes photographs of the stars.
  • at cross purposes — an opposing or contrary purpose.
  • at cross-purposes — If people are at cross-purposes, they do not understand each other because they are working towards or talking about different things without realizing it.
  • at swords' points — ready to quarrel or fight
  • attraction sphere — centrosphere (sense 1)
  • audio description — a facility provided for visually impaired people in which a film, television programme, or play is described through audio technology
  • australian kelpie — one of an Australian breed of medium-sized sheepherding dogs having a short, harsh, straight coat in a combination of colors that can include black, red, tan, fawn, chocolate, or smoke blue, probably developed by crossbreeding between the border collie and dingo.
  • australopithecine — any of various extinct apelike primates of the genus Australopithecus and related genera, remains of which have been discovered in southern and E Africa. Some species are estimated to be over 4.5 million years old
  • background report — a report on someone or something that sheds light on their background, esp a report on the background of a person convicted of a crime before they are sentenced by a judge
  • bacteriorhodopsin — a purple protein containing retinal and found in the plasma membrane of certain bacteria (genus Halobacterium): it directly supplies electrochemical energy from sunlight
  • baltimore clipper — a small, fast American sailing vessel of the early 19th century, having a sharp hull form and two masts with a pronounced rake and carrying a brig or schooner rig.
  • bangalore torpedo — an explosive device in a long metal tube, used to blow gaps in barbed-wire barriers
  • bankruptcy estate — all of the interests that a debtor has at the start of a bankruptcy case
  • basic proposition — protocol (def 6).
  • basketball player — someone who plays basketball
  • behaviour therapy — any of various means of treating psychological disorders, such as desensitization, aversion therapy, and instrumental conditioning, that depend on the patient systematically learning new modes of behaviour
  • bermuda buttercup — a bulbous plant, Oxalis pescaprae, native to southern Africa, having nodding, yellow flowers.
  • binary opposition — a relation between the members of a pair of linguistic items, as a pair of distinctive features, such that one is the absence of the other, as voicelessness and voice, or that one is at the opposite pole from the other, as stridency and mellowness.
  • biological parent — a parent who has conceived (biological mother) or sired (biological father) rather than adopted a child and whose genes are therefore transmitted to the child.
  • biopharmaceutical — of or relating to drugs produced using biotechnology
  • bjarne stroustrup — (person)   The father of C++ and author of the C++ bible.
  • body center plate — one of a pair of plates that fit together and support the body of a car on a truck, while allowing the truck to rotate with respect to the body. One plate (body center plate) is attached to the underside of the car body and the other (truck center plate) is part of the car truck.
  • book depreciation — Book depreciation is depreciation in a company's internal financial records that is different from the amount that is used for taxes.
  • boolean operation — any operation in which each of the operands and the result take one of two values.
  • branch prediction — (processor, algorithm)   A technique used in some processors with instruction prefetch to guess whether a conditional branch will be taken or not and prefetch code from the appropriate location. When a branch instruction is executed, its address and that of the next instruction executed (the chosen destination of the branch) are stored in the Branch Target Buffer. This information is used to predict which way the instruction will branch the next time it is executed so that instruction prefetch can continue. When the prediction is correct (and it is over 90% of the time), executing a branch does not cause a pipeline break. Some later CPUs simply prefetch both paths instead of trying to predict which way the branch will go. An extension of the idea of branch prediction is speculative execution.
  • brazilian peridot — a light yellowish-green tourmaline used as a gem: not a true peridot.
  • bring up the rear — to be at the back in a procession, race, etc
  • brocot escapement — a type of anchor escapement.
  • brompton cocktail — an analgesic mixture, usually containing morphine and cocaine and sometimes other narcotic substances in an alcohol solution, administered primarily to advanced cancer patients.
  • california privet — a privet, Ligustrum ovalifolium, of the olive family, native to Japan, having glossy, oval leaves and long clusters of white flowers, widely used for hedges in the U.S.
  • campus university — a university in which the buildings, often including shops and cafés, are all on one site
  • cancer specialist — a medical professional who specializes in the treatment or study of malignant growths or tumours
  • cape horn current — the part of the Antarctic Circumpolar Current flowing E at Cape Horn.
  • capital formation — the net additions to a capital stock in an accounting period
  • capital structure — the way that a company finances its assets through a combination of equity, debt etc
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