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24-letter words containing e, p, i, t, r

  • polychlorinated biphenyl — PCB.
  • polymer matrix composite — A polymer matrix composite is a material consisting of a composite made stronger by adding fibers or particles to it.
  • port address translation — (networking)   (PAT) A function provided by some routers which allows hosts on a LAN to communicate with the rest of a network (such as the Internet) without revealing their own private IP address. All outbound packets have their IP address translated to the routers external IP address. Replies come back to the router which then translates them back into the private IP address of the original host for final delivery. Compare SOCKS.
  • potassium cobaltinitrite — a yellow, crystalline, slightly water-soluble powder, K 3 Co(NO 2) 6 , used as a pigment in oil and watercolor paints, and for coloring surfaces of glass, porcelain, etc.
  • potentiometric titration — titration in which the end point is determined by measuring the voltage of an electric current of given amperage passed through the solution.
  • prairie button snakeroot — a stout composite plant, Liatris pycnostachya, of prairies in the central U.S., having showy, rose-purple flower heads in dense spikes.
  • pre-emptive multitasking — (operating system, parallel)   A type of multitasking where the scheduler can interrupt and suspend ("swap out") the currently running task in order to start or continue running ("swap in") another task. The tasks under pre-emptive multitasking can be written as though they were the only task and the scheduler decides when to swap them. The scheduler must ensure that when swapping tasks, sufficient state is saved and restored that tasks do not interfere. The length of time for which a process runs is known as its "time slice" and may depend on the task's priority or its use of resources such as memory and I/O. This contrasts with cooperative multitasking where each task must include calls to allow it to be descheduled periodically.
  • preparatory to doing sth — If one action is done preparatory to another, it is done before the other action, usually as preparation for it.
  • presumption of innocence — the rebuttable presumption of the innocence of the defendant in a criminal action in Anglo-Saxon jurisprudence, placing upon the prosecution the burden of proof of the defendant's guilt.
  • pretty amazing new stuff — (humour, communications)   (PANS) What PSTN is evolving into.
  • principal quantum number — the nonnegative, integral quantum number that defines the stationary orbits in the Bohr model of the atom.
  • private health insurance — insurance against the need for medical treatment as a private patient
  • private-key cryptography — (cryptography)   As opposed to public-key cryptography, a cryptographic method in which the same key is used to encrypt and decrypt the message. Private-key algorithms include the obsolescent Data Encryption Standard (DES), triple-DES (3DES), the Advanced Encryption Standard (AES), also known as Rijndael, Blowfish, Twofish RC2, RC4, RC5 and RC6. A problem with private-key cryptography is that the sender and the recipient of the message must agree on a common key via some alternative secure channel.
  • privileged communication — a communication that one cannot legally be compelled to divulge, as that to a lawyer from a client
  • professional association — a body of persons engaged in the same profession, formed usually to control entry into the profession, maintain standards, and represent the profession in discussions with other bodies
  • professional corporation — a corporation formed by one or more licensed practitioners, especially medical or legal, to operate their practices on a corporate plan. Abbreviation: PC, P.C.
  • program information file — (file format)   Under Windows, a file providing information on how a non-Windows application program should be run, including how much memory should be allocated to it and what graphics interface it requires.
  • progressive assimilation — assimilation in which a preceding sound has an effect on a following one, as in shortening captain to cap'm rather than cap'n.
  • progressive conservative — a member of the Progressive Conservative party of Canada.
  • psychopathic personality — an antisocial personality characterized by the failure to develop any sense of moral responsibility and the capability of performing violent or antisocial acts
  • public international law — Also called public law. the law governing the legal relations between independent states or nations and, increasingly, between these and individuals.
  • public relations officer — a person who is responsible for communications with the public
  • pure functional language — purely functional language
  • put one's house in order — a building in which people live; residence for human beings.
  • put the fear of god into — a distressing emotion aroused by impending danger, evil, pain, etc., whether the threat is real or imagined; the feeling or condition of being afraid. Synonyms: foreboding, apprehension, consternation, dismay, dread, terror, fright, panic, horror, trepidation, qualm. Antonyms: courage, security, calm, intrepidity.
  • put their heads together — to consult together
  • pyrotraumatic dermatitis — hot spot.
  • rapid eye movement sleep — REM sleep.
  • rational-emotive therapy — a form of therapy in which a patient is asked to reject irrational attitudes and assumptions in order to deal effectively with stressful situations.
  • reciprocal translocation — an exchange of segments between two nonhomologous chromosomes.
  • recommended retail price — the selling price of a product officially suggested by a manufacturer to a retailer
  • recursive descent parser — (grammar)   A "top-down" parser built from a set of mutually-recursive procedures or a non-recursive equivalent where each such procedure usually implements one of the productions of the grammar. Thus the structure of the resulting program closely mirrors that of the grammar it recognises.
  • referential transparency — (programming)   An expression E is referentially transparent if any subexpression and its value (the result of evaluating it) can be interchanged without changing the value of E. This is not the case if the value of an expression depends on global state which can change value. The most common example of changing global state is assignment to a global variable. For example, if y is a global variable in: f(x) { return x+y; } g(z) { a = f(1); y = y + z; return a + f(1); } function g has the "side-effect" that it alters the value of y. Since f's result depends on y, the two calls to f(1) will return different results even though the argument is the same. Thus f is not referentially transparent. Changing the order of evaluation of the statements in g will change its result. We could make f above referentially transparent by passing in y as an argument: f(x, y) = x+y Similarly, g would need to take y as an argument and return its new value as part of the result: g(z, y) { a = f(1, y); y' = y+z; return (a + f(1, y'), y'); } Referentially transparent programs are more amenable to formal methods and easier to reason about because the meaning of an expression depends only on the meaning of its subexpressions and not on the order of evaluation or side-effects of other expressions. We can stretch the concept of referential transparency to include input and output if we consider the whole program to be a function from its input to its output. The program as a whole is referentially transparent because it will always produce the same output when given the same input. This is stretching the concept because the program's input may include what the user types, the content of certain files or even the time of day. If we do not consider global state like the contents of files as input, then writing to a file and reading what was written behaves just like assignment to a global variable. However, if we must consider the state of the universe as an input rather than global state then any deterministic system would be referentially transparent! See also extensional equality, observational equivalence.
  • repetitive strain injury — overuse strain injury
  • repondez s'il vous plait — Répondez s'il vous plait
  • representative democracy — a person or thing that represents another or others.
  • reproductive imagination — the faculty of imagining, or of forming mental images or concepts of what is not actually present to the senses.
  • republic of south africa — Republic of, a country in S Africa; member of the Commonwealth of Nations until 1961. 472,000 sq. mi. (1,222,480 sq. km). Capitals: Pretoria and Cape Town.
  • resale price maintenance — the practice by which a manufacturer establishes a fixed or minimum price for the resale of a brand product by retailers or other distributors
  • responsibility allowance — payment made to somebody who has special responsibilities
  • scalable vector graphics — (graphics, web)   A W3C standard for vector graphics, based on XML.
  • serial interface adaptor — (SIA) The Ethernet driver chip used on a Filtabyte Ethernet card.
  • shenandoah national park — a national park in N Virginia, including part of the Blue Ridge mountain range. 302 sq. mi. (782 sq. km).
  • single person supplement — an additional sum of money that a hotel charges for one person to stay in a room meant for two people
  • skeleton in the cupboard — a scandalous fact or event in the past that is kept secret
  • slop oil recovery system — A slop oil recovery system is a method and the equipment used for cleaning and disposing of mixtures of oil, chemicals, and water from various sources in a refinery or oilfield.
  • socialist workers' party — one of the biggest extreme left wing parties in Britain
  • special development area — an area earmarked for special development by the government
  • split image range finder — a range finder in which opposing halves of a split field move relative to each other and coincide when the object centered in the field is in focus.
  • staggered pin grid array — (hardware)   (SPGA) A style of integrated circuit socket or pin-out with a staggered grid of pins around the edge of the socket, positioned as several squares, one inside the other. SPGA is commonly used on motherboards for processors, e.g. Socket 5, Socket 7 and Socket 8. See also PGA.
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