18-letter words containing u, d, o, n, t

optical soundtrack — the final soundtrack on a motion picture, which appears as a band of black and white serrations along a strip of film to the left of the composite print. Light is shined through the serrations and is converted to audible sound.
order of magnitude — You can use order of magnitude when you are giving an approximate idea of the amount or importance of something.
orthotungstic acid — an oxyacid acid of tungsten. Formula: H2WO4
out of one's depth — a dimension taken through an object or body of material, usually downward from an upper surface, horizontally inward from an outer surface, or from top to bottom of something regarded as one of several layers.
out of one's hands — no longer one's responsibility
outside-in testing — (testing) A strategy for integration testing where units handling program inputs and outputs are tested first, and units that process the inputs to produce output are incrementally included as the system is integrated. A form of hybrid testing.
parallel reduction — A form of applicative order reduction in which all redexes in an expression are reduced simultaneously. Variants include parallel outermost reduction and lenient reduction. See normal order reduction.
pass the hat round — to collect money, as for a cause
passing modulation — a modulation of a temporary nature.
passing-out parade — a ceremonial parade of cadets who have completed their training
physical education — systematic instruction in sports, exercises, and hygiene given as part of a school or college program.
piperonyl butoxide — a light-brown liquid, C 1 9 H 3 0 O 5 , used chiefly as a synergist in certain insecticides.
pitch-and-run shot — chip shot.
play cat and mouse — Also called cat and rat. a children's game in which players in a circle keep a player from moving into or out of the circle and permit a second player to move into or out of the circle to escape the pursuing first player.
point of departure — Nautical. the precise location of a vessel, established in order to set a course, especially in beginning a voyage in open water.
population density — ratio: inhabitants to area
population pyramid — a graph showing the distribution of a population by sex, age, etc.
pound the pavement — a paved road, highway, etc.
pour cold water on — If someone pours cold water on a plan or idea, they criticize it so much that people lose their enthusiasm for it.
predation pressure — the effect of predation upon a population, resulting in the decrease in size of that population.
prepare the ground — make conditions ready
product acceptance — the verification or acceptance that a manufactured item meets required specifications or standards and is usable for its purpose
production company — an organization which produces, films, plays, television or radio programmes
production control — the planning and supervision of manufacturing activities to ensure that goods will be produced on time at the lowest possible cost.
production manager — a supervisor of the budget, crew and other details in the production of a film or play
productivity bonus — an extra payment made to workers for being more productive or yielding more favourable results than normal
prometheus unbound — a drama in verse (1820) by Shelley.
protocol data unit — (PDU) A packet of data passed across a network. The term implies a specific layer of the OSI seven layer model and a specific protocol.
pseudo-anarchistic — a person who advocates or believes in anarchy or anarchism.
pseudoappendicitis — inflammation of the vermiform appendix.
pseudointellectual — a person exhibiting intellectual pretensions that have no basis in sound scholarship.
put a bold face on — to seem bold or confident about
put one in mind of — to remind (one) of
put your foot down — If someone puts their foot down, they use their authority in order to stop something happening.
quadratic equation — an equation containing a single variable of degree 2. Its general form is ax 2 + bx + c = 0, where x is the variable and a, b, and c are constants (a ≠ 0).
quartz-iodine lamp — a type of tungsten-halogen lamp containing small amounts of iodine and having a quartz envelope, operating at high temperature and producing an intense light for use in car headlamps, etc
radiation exposure — exposure to radiant energy or to the particles emitted in the transfer of radiant energy, esp the particles and gamma rays emitted in nuclear decay; exposure to radioactive substances
radiation pressure — the pressure exerted on a surface by electromagnetic radiation or by sound waves.
radiocommunication — communication by means of radio waves
radius of gyration — the distance from an axis at which the mass of a body may be assumed to be concentrated and at which the moment of inertia will be equal to the moment of inertia of the actual mass about the axis, equal to the square root of the quotient of the moment of inertia and the mass.
reduction division — the first division of meiosis in which the number of chromosomes is reduced to half the original number.
reduction strategy — (theory) An algorithm for deciding which redex(es) to reduce next. Different strategies have different termination properties in the presence of recursive functions or values. See string reduction, normal order reduction, applicative order reduction, parallel reduction
reproduction proof — repro proof.
return to the fold — come back home
runge-kutta method — a numerical method, involving successive approximations, used to solve differential equations.
russian federation — a republic extending from E Europe to N and W Asia. 6,593,000 sq. mi. (17,076,000 sq. km). Capital: Moscow.
sao caetano do sul — a city in SE Brazil, SE of São Paulo.
saturated solution — A saturated solution is a solution in which there is so much solute that if there was any more, it would not dissolve.
scottish deerhound — one of a Scottish breed of large, tall hunting dogs having a medium-length, wiry, gray or reddish-fawn coat, originally developed for hunting and bringing down deer, and known as the royal dog of Scotland.
second triumvirate — the coalition and joint rule of the Roman Empire by Antony, Lepidus, and Octavian, begun in 43 bc

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