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23-letter words containing p, r, o

  • parasexual reproduction — reproduction by recombination of genes from genetically dissimilar nuclei within binucleate or multinucleate cells, as in filamentous fungi.
  • parkinson's law of data — "Data expands to fill the space available for storage"; buying more memory encourages the use of more memory-intensive techniques. It has been observed over the last 10 years that the memory usage of evolving systems tends to double roughly once every 18 months. Fortunately, memory density available for constant dollars also tends to double about once every 12 months (see Moore's Law); unfortunately, the laws of physics guarantee that the latter cannot continue indefinitely.
  • parliamentary democracy — a system of government in which people elect representatives to a parliament to make laws, for example Canada and the UK
  • partial differentiation — the process of finding one of the partial derivatives of a function of several variables.
  • participant observation — a technique of field research, used in anthropology and sociology, by which an investigator (participant observer) studies the life of a group by sharing in its activities.
  • participatory democracy — individual participation by citizens in political decisions and policies that affect their lives, especially directly rather than through elected representatives.
  • pay one's last respects — If you pay your last respects to someone who has just died, you show your respect or affection for them by coming to see their body or their grave.
  • pentachloronitrobenzene — a crystalline compound, C 6 Cl 5 NO 2 , used as an herbicide and insecticide. Abbreviation: PCNB.
  • pentagonal dodecahedron — pyritohedron.
  • perceived noise decibel — a unit for measuring perceived levels of noise by comparison with the sound pressure level of a reference sound judged equally noisy by a normal listener
  • percentage distribution — a frequency distribution is which individual frequencies are shown as a percentage of the total frequencies
  • performance-related pay — salary based on individual assessment
  • peroxymonosulfuric acid — persulfuric acid (def 1).
  • pest control department — the local government department responsible for controlling such pests as rats and mice
  • pharmaceuticals company — a company specialising in developing and marketing pharmaceuticals
  • philadelphia pepper pot — pepper pot (def 1).
  • photoelectric magnitude — the magnitude of a star determined using a photometer plus a filter to select light or other radiation of the desired wavelength
  • photoelectric threshold — the minimum frequency or maximum wavelength of incident radiation necessary to release photons from a given surface.
  • physical memory address — physical address
  • pin someone's ears back — the organ of hearing and equilibrium in vertebrates, in humans consisting of an external ear that gathers sound vibrations, a middle ear in which the vibrations resonate against the tympanic membrane, and a fluid-filled internal ear that maintains balance and that conducts the tympanic vibrations to the auditory nerve, which transmits them as impulses to the brain.
  • pithecanthropus erectus — Java man
  • plan position indicator — a radarscope on which an object reflecting radar waves shows its bearing and distance from the radar detector by causing a spot of light to appear on a screen that represents a map of the area around the detector. Abbreviation: PPI.
  • play a part/play a role — If something or someone plays a part or plays a role in a situation, they are involved in it and have an effect on it.
  • play by electronic mail — (games)   A kind of game where the players use electronic mail to communicate. This may be done via a human moderator or an automatic mailing list exploder on some central machine or it may be fully distributed with each player just addressing his mail to all other players. This is a natural extension of "play by mail" games conducted via snail mail.
  • point-to-point protocol — (communications, protocol)   (PPP) The protocol defined in RFC 1661, the Internet standard for transmitting network layer datagrams (e.g. IP packets) over serial point-to-point links. PPP has a number of advantages over SLIP; it is designed to operate both over asynchronous connections and bit-oriented synchronous systems, it can configure connections to a remote network dynamically, and test that the link is usable. PPP can be configured to encapsulate different network layer protocols (such as IP, IPX, or AppleTalk) by using the appropriate Network Control Protocol (NCP).
  • political incorrectness — Political incorrectness is the attitude or policy shown by someone who does not care if they offend or upset any group of people in society who have a disadvantage, or who have been treated differently because of their sex, race, or disability.
  • polybrominated biphenyl — PBB.
  • polymethyl methacrylate — polymerized methyl methacrylate.
  • polytetrafluoroethylene — any polymer, plastic, or resin having the formula (C 2 F 4) n , prepared from tetrafluoroethylene, noted for its slippery, nonsticking properties, and used in the manufacture of gaskets, electrical insulation, tubing, candy molds, container linings, frying-pan coatings, etc.
  • polyvinylidene chloride — a polymer of vinylidene chloride, used chiefly in the manufacture of saran.
  • portable object adapter — (architecture)   (POA) Part of the CORBA architecture.
  • portable tool interface — (programming, standard)   (PTI) A standard such as PCTE, allowing interworking between different software tools via defined interfaces to the user and to the repository or object management system.
  • positive discrimination — special opportunities
  • postcode discrimination — discrimination on the basis of the area where someone lives, with relation to employment, credit rating, etc
  • potassium acid tartrate — cream of tartar.
  • power factor correction — Power factor correction is the process of increasing the power factor to near unity without altering the original load.
  • precautionary principle — the precept that an action should not be taken if the consequences are uncertain and potentially dangerous
  • precipitation hardening — a process in which alloys are strengthened by the formation, in their lattice, of a fine dispersion of one component when the metal is quenched from a high temperature and aged at an intermediate temperature
  • preferred provider plan — A preferred provider plan is a health insurance plan in the U.S. written by an organization of hospitals and physicians who provide services to clients of a particular insurance company.
  • presidential government — a system of government in which the powers of the president are constitutionally separate from those of the legislature.
  • price escalation clause — a clause in a contract allowing the seller to raise prices if the cost of inputs increases
  • price out of the market — to charge so highly for as to prevent the sale, hire, etc, of
  • printer access protocol — (networking, protocol, printer)   (PAP) A protocol used in Mac OS Appletalk to provide bi-directional communication between PostScript printers and the client computer.
  • private limited company — a company whose shares can be bought by the public
  • probabilistic automaton — nondeterministic automaton
  • process gas compression — Process gas compression is a procedure for pressurizing and circulating gas through a process by compressing it in a cylinder, to enhance conditions for chemical reaction.
  • process hazard analysis — Process hazard analysis is calculating what might be a hazard in a process, how likely it is to happen, and what should be done if someone or something is exposed to this hazard.
  • process intensification — Process intensification is a change made to a process to make it work in a smaller volume for the same performance.
  • product differentiation — the real or illusory distinction between competing products in a market
  • productivity bargaining — the process of reaching an agreement (productivity agreement) through collective bargaining whereby the employees of an organization agree to changes which are intended to improve productivity in return for an increase in pay or other benefits
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