19-letter words containing r, e, t, n, i
- preproduction trial — a trial to test a prototype of a product before the product goes into full-scale production
- prescription charge — a charge, set by the government, to be paid by a patient for medicines
- presentation skills — the set of techniques and skills required successfully to present oral information to others
- presidente prudente — a city in central Brazil.
- presumption of fact — a presumption based on experience or knowledge of the relationship between a known fact and a fact inferred from it.
- preventive medicine — the branch of medical science that deals with prevention of disease.
- primary containment — Primary containment is the main means of preventing leaks and spills using equipment in direct content with the oil or gas being stored or transported.
- prime interest rate — prime rate.
- priority scheduling — (operating system) Processes scheduling in which the scheduler selects tasks to run based on their priority as opposed to, say, a simple round-robin. Priorities may be static or dynamic. Static priorities are assigned at the time of creation, while dynamic priorities are based on the processes' behaviour while in the system. For example, the scheduler may favour I/O-intensive tasks so that expensive requests can be issued as early as possible. A danger of priority scheduling is starvation, in which processes with lower priorities are not given the opportunity to run. In order to avoid starvation, in preemptive scheduling, the priority of a process is gradually reduced while it is running. Eventually, the priority of the running process will no longer be the highest, and the next process will start running. This method is called aging.
- private prosecution — a prosecution started by a private individual rather than by the police
- privatization issue — an issue of shares available for purchase by members of the public when a publicly owned organization is transferred to the private sector
- professionalization — to give a professional character or status to; make into or establish as a profession.
- projection printing — the act or process of making projection prints.
- promotion prospects — the chances or prospects an employee has for promotion or for gaining a better position, often in the same company
- promotions director — someone in charge of encouraging the sale of (a product) by advertising or securing financial support
- protease inhibitors — a drug that inhibits the action of protease, especially any of a class of antiviral drugs that prevent the cleavage and replication of HIV proteins.
- proto-indo-european — the unattested prehistoric parent language of the Indo-European languages; Indo-European.
- pseudo-conservative — disposed to preserve existing conditions, institutions, etc., or to restore traditional ones, and to limit change.
- pseudo-experimental — pertaining to, derived from, or founded on experiment: an experimental science.
- pseudo-intransitive — denoting an occurrence of a normally transitive verb in which a direct object is not explicitly stated or forms the subject of the sentence, as in Margaret is cooking or these apples cook well
- psychic determinism — the theory that all aspects of a person's psychological makeup arise from specific causes or forces, as previous experiences or instinctual drives, which may be conscious or unconscious.
- public-interest law — a branch of law that often utilizes class-action suits to protect the interest of a large group or of the public at large, as in matters relating to racial discrimination, air pollution, etc.
- puncture repair kit — set of tools for patching a bicycle tyre
- purse-string suture — a suture for a circular opening, stitched around the edge, that closes it when pulled.
- put a figure on sth — When you put a figure on an amount, you say exactly how much it is.
- put one's finger on — any of the terminal members of the hand, especially one other than the thumb.
- put the skids under — a plank, bar, log, or the like, especially one of a pair, on which something heavy may be slid or rolled along.
- pyrenees-orientales — a department in S France. 1600 sq. mi. (4145 sq. km). Capital: Perpignan.
- quantum electronics — the application of quantum mechanics and quantum optics to the study and design of electronic devices
- queen's regulations — (in Britain and certain other Commonwealth countries when the sovereign is female) the code of conduct for members of the armed forces
- quick-change artist — a person adept at changing from one thing to another, as an entertainer who changes costumes quickly during a performance.
- radiation potential — the potential in volts that must be applied to an atom or molecule to cause it to emit radiation at one of its characteristic frequencies.
- rate of penetration — The rate of penetration is the speed with which a drill bit can break the rock under it.
- rayleigh scattering — the scattering of light by particles that are very small in relation to the wavelength of the light, and in which the intensity of the scattered light varies inversely with the fourth power of the wavelength.
- reactive depression — depression occurring in response to some situational stress, as loss of one's job.
- rebus sic stantibus — (of the duration of the binding force treaty) for as long as the relevant facts and circumstances remain basically the same.
- reception committee — an organized gathering of people to welcome a visitor
- reconceptualization — to form into a concept; make a concept of.
- recording equipment — devices used for sound reproduction
- recording secretary — an officer charged with keeping the minutes of meetings and responsible for the records.
- recurrence relation — (mathematics) An equation that defines each element of a sequence in terms of one or more earlier elements. E.g. The Fibonacci sequence, X[1] = 1 X[2] = 1 X[n] = X[n-1] + X[n-2] Some recurrence relations can be converted to "closed form" where X[n] is defined purely in terms of n, without reference to earlier elements.
- redbrick university — any new or little-known university, especially one built since World War II to educate students in industrial regions, emphasizing technical subjects rather than the classics, and often partially supported by government funds.
- reduction potential — (in a galvanic cell) the potential of the electrode at which reduction occurs.
- register allocation — (compiler, algorithm) The phase of a compiler that determines which values will be placed in registers. Register allocation may be combined with register assignment. This problem can be shown to be isomorphic to graph colouring by relating values to nodes in the graph and registers to colours. Values (nodes) which must be valid simultaneously are linked by edges and cannot be stored in the same register (coloured the same). See also register dancing and register spilling.
- register assignment — (compiler, algorithm) The phase of a compiler that determines which register to use for each program value selected during register allocation.
- registration number — number on vehicle licence plate
- reindustrialization — the revitalization of an industry or industrial society through government aid and tax incentives, modernization of factories and machinery, etc.
- reinforced concrete — concrete containing steel bars, strands, mesh, etc., to absorb tensile and shearing stresses.
- relational calculus — (database) An operational methodolgy, founded on predicate calculus, dealing with descripitive expressions that are equivalent to the operations of relational algebra. Codd's reduction algorithm can convert from relational calculus to relational algebra. Two forms of the relational calculus exist: the tuple calculus and the domain calculus.
- relational database — an electronic database comprising multiple files of related information, usually stored in tables of rows (records) and columns (fields), and allowing a link to be established between separate files that have a matching field, as a column of invoice numbers, so that the two files can be queried simultaneously by the user.