16-letter words containing m, a, t, r
- parliament hinge — a butt hinge the knuckle of which protrudes from the door so that the door when fully opened stands away from the wall.
- pascal's theorem — the theorem that the lines joining adjacent vertices of a hexagon intersect the same straight line if alternate vertices lie on two intersecting straight lines.
- pattern matching — 1. A function is defined to take arguments of a particular type, form or value. When applying the function to its actual arguments it is necessary to match the type, form or value of the actual arguments against the formal arguments in some definition. For example, the function length [] = 0 length (x:xs) = 1 + length xs uses pattern matching in its argument to distinguish a null list from a non-null one. There are well known algorithm for translating pattern matching into conditional expressions such as "if" or "case". E.g. the above function could be transformed to 2. Descriptive of a type of language or utility such as awk or Perl which is suited to searching for strings or patterns in input data, usually using some kind of regular expression.
- peano arithmetic — (mathematics) Giuseppe Peano's system for representing natural numbers inductively using only two symbols, "0" (zero) and "S" (successor). This system could be expressed as a recursive data type with the following Haskell definition: data Peano = Zero | Succ Peano The number three, usually written "SSS0", would be Succ (Succ (Succ Zero)). Addition of Peano numbers can be expressed as a simple syntactic transformation: plus Zero n = n plus (Succ m) n = Succ (plus m n) (1995-03-28)
- pectoralis major — the larger of the two large chest muscles that assist in movements of the shoulder and upper arm
- pectoralis minor — the smaller of the two large chest muscles that assist in movements of the shoulder and upper arm
- pension mortgage — an arrangement whereby a person takes out a mortgage and pays the capital repayment instalments into a pension fund and the interest to the mortgagee. The loan is repaid out of the tax-free lump sum proceeds of the pension plan on the borrower's retirement
- perchloromethane — carbon tetrachloride.
- performance test — a test requiring little or no use of language, the test materials being designed to elicit manual or behavioral responses rather than verbal ones.
- permaculturalist — a system of cultivation intended to maintain permanent agriculture or horticulture by relying on renewable resources and a self-sustaining ecosystem.
- permafrost table — the variable surface constituting the upper limit of permafrost. Compare frostline (def 2).
- permanent magnet — a magnet that retains its magnetism after being removed from an external magnetic field.
- perpetual motion — the motion of a theoretical mechanism that, without any losses due to friction or other forms of dissipation of energy, would continue to operate indefinitely at the same rate without any external energy being applied to it.
- phalansterianism — a system by which society would be reorganized into units comprising their own social and industrial elements; Fourierism.
- phantasmagorical — having a fantastic or deceptive appearance, as something in a dream or created by the imagination.
- pharmacogenetics — the branch of pharmacology that examines the relation of genetic factors to variations in response to drugs.
- pharmacokinetics — the branch of pharmacology that studies the fate of pharmacological substances in the body, as their absorption, distribution, metabolism, and elimination.
- pheochromocytoma — a tumor of the sympathetic nervous system or adrenal medulla, that produces excess norepinephrine and epinephrine and causes hypertension, headaches, nausea, etc.
- photograph album — bound book for photos
- photopolarimeter — a polarimeter that uses a photocell.
- phytoremediation — a process of decontaminating soil or water by using plants and trees to absorb or break down pollutants.
- pietermaritzburg — a province in the E part of the Republic of South Africa. 35,284 sq. mi. (91,886 sq. km). Capital: Pietermaritzburg.
- platform-balance — a scale with a platform for holding the items to be weighed.
- platinum-iridium — (standard) A standard, against which all others of the same category are measured. Usage: silly. The notion is that one of whatever it is has actually been cast in platinum-iridium alloy and placed in the vault beside the Standard Kilogram at the International Bureau of Weights and Measures near Paris, as the bar defining the standard metre once was. "This garbage collection algorithm has been tested against the platinum-iridium cons cell in Paris." Compare golden.
- pleasure steamer — a boat powered by steam, used for recreational purposes
- pneumatic trough — a trough filled with liquid, especially water, for collecting gases in bell jars or the like by displacement.
- portable airtime — (communications, wireless) A wireless, digital communications system enabling user-to-user voice communication, "quicknotes", and alphanumeric messaging.
- portmanteau word — a case or bag to carry clothing in while traveling, especially a leather trunk or suitcase that opens into two halves.
- post-reformation — the act of reforming; state of being reformed.
- post-romanticism — romantic spirit or tendency.
- potato tuberworm — the larva of the potato moth.
- powerpc platform — (architecture, standard) (PPCP, PReP - PowerPC Reference Platform, formerly CHRP - Common Hardware Reference Platform) An open system standard, designed by IBM, intended to ensure compatibility among PowerPC-based systems built by different companies. The PReP standard specifies the PCI bus, but will also support ISA, MicroChannel and PCMCIA. PReP-compliant systems will be able to run the Macintosh OS, OS/2, WorkplaceOS, AIX, Solaris, Taligent and Windows NT. IBM systems will (of course) be PReP-compliant. Apple's first PowerPC Macintoshes will not be compliant, but future ones may be.
- practice manager — the manager of a business such as a medical practice, dental practice, or legal practice
- pragmatic theory — the theory of truth that the truth of a statement consists in its practical consequences, especially in its agreement with subsequent experience.
- pre-emancipation — the act of emancipating.
- precontemplation — the act of contemplating; thoughtful observation.
- predetermination — to settle or decide in advance: He had predetermined his answer to the offer.
- primary election — primary (def 15a).
- primary electron — in thermionics, any of the electrons falling on a body, distinguished from those emitted by it
- primary industry — an industry, as agriculture, forestry, or fishing, that deals in obtaining natural materials.
- primary meristem — primary tissue derived from an apical meristem.
- print journalism — journalism as practiced in newspapers and magazines.
- prismatic colors — the colors of the visible spectrum produced by passing white light through a prism; red, orange, yellow, green, blue, indigo, and violet
- private judgment — personal opinion formed independently of the expressed position of an institution, as in matters of religion or politics.
- privet andromeda — a spreading shrub, Lyonia ligustrina, of the eastern U.S., having leafless, white flowers in terminal clusters.
- proenvironmental — the aggregate of surrounding things, conditions, or influences; surroundings; milieu.
- program director — a chief executive responsible for selecting and scheduling programs.
- programmatically — by using a computer program: You can set the value in each field programmatically with a simple algorithm. The background shapes can be programmatically drawn and animated.
- programme editor — someone responsible for editing, overseeing and selecting the content of radio or television programmes
- progress payment — an instalment of a larger payment made to a contractor for work carried out up to a specified stage of the job