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17-letter words containing a, p, i, o

  • aperture-priority — of or relating to a semiautomatic exposure system in which the photographer presets the aperture and the camera selects the shutter speed.
  • apostolic fathers — the Fathers of the early Church who immediately followed the Apostles
  • 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.
  • april fool's joke — (humour, event)   (AFJ) Elaborate April Fool's hoaxes are a long-established tradition on Usenet and Internet; see kremvax for an example. In fact, April Fool's Day is the *only* seasonal holiday marked by customary observances on the hacker networks.
  • armchair shopping — buying goods using a computer, telephone, or television in the home or via the postal system
  • aromatic compound — an organic compound that contains one or more benzene or equivalent heterocyclic rings: many such compounds have an agreeable odor.
  • arsenic poisoning — poisoning by arsenic
  • 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
  • at one's disposal — If you have something at your disposal, you are able to use it whenever you want, and for whatever purpose you want. If you say that you are at someone's disposal, you mean that you are willing to help them in any way you can.
  • 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
  • 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
  • avoirdupois pound — a pound weighing 16 ounces
  • babi yar symphony — a symphony (1962) by Dimitri Dimitrievich Shostakovich.
  • 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.
  • basic proposition — protocol (def 6).
  • 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
  • beyond comparison — outstanding, without equal
  • 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.
  • biological weapon — a weapon which uses a biological agent to harm people and other living organisms
  • biopharmaceutical — of or relating to drugs produced using biotechnology
  • blasphemous libel — In Britain, previously, the crime committed if a person insults, offends, or vilifies the deity, Christ, or the Christian religion
  • blind carbon copy — a duplicate of anything written or typed, or a copy of an email or other electronic document, that is sent to someone whose name is not visible to the primary addressee. Abbreviation: bcc.
  • blowpipe analysis — a type of chemical analysis in which the intensely hot flame of a blowpipe vaporizes a mineral or other substance with a characteristically colored flame and a unique odor, so as to identify chemical elements in a substance
  • boileau-despreaux — Nicolas [nee-kaw-lah] /ni kɔˈlɑ/ (Show IPA), 1636–1711, French critic and poet.
  • 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.
  • boothia peninsula — a peninsula of N Canada: the northernmost part of the mainland of North America, lying west of the Gulf of Boothia, an arm of the Arctic Ocean
  • bradford spinning — a wool-spinning method in which the fibers are oiled prior to combing and subsequently spun into worsted yarn.
  • 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.
  • breach of promise — (formerly) failure to carry out one's promise to marry
  • 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.
  • café-au-lait spot — a brown patch on the skin that can occur normally in small numbers or in neurofibromatosis, when they are more numerous
  • calcium phosphate — the insoluble nonacid calcium salt of orthophosphoric acid (phosphoric(V) acid): it occurs in bones and is the main constituent of bone ash. Formula: Ca3(PO4)2
  • 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.
  • canadian pondweed — a North American aquatic plant, Elodea (or Anacharis) canadensis, naturalized in Europe, having crowded dark green leaves: family Hydrocharitaceae. It is used in aquariums
  • canine parvovirus — a highly contagious viral disease of dogs characterized by vomiting, haemorrhagic diarrhoea, depression, and, in severe cases, death
  • capital allowance — the practice of allowing a certain amount of money spent by a company on fixed assets to be taken off the profits of the company before tax is imposed
  • capital formation — the net additions to a capital stock in an accounting period
  • carbon disulphide — a colourless slightly soluble volatile flammable poisonous liquid commonly having a disagreeable odour due to the presence of impurities: used as an organic solvent and in the manufacture of rayon and carbon tetrachloride. Formula: CS2
  • carbon microphone — a microphone in which a diaphragm, vibrated by sound waves, applies a varying pressure to a container packed with carbon granules, altering the resistance of the carbon. A current flowing through the carbon is thus modulated at the frequency of the sound waves
  • cardiac tamponade — tamponade (def 2).
  • cardiac-tamponade — Medicine/Medical. the use of a tampon, as to stop a hemorrhage.
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