18-letter words containing l, u, i, n

oblique projection — something that is oblique.
occupational group — An occupational group is a category used by insurance companies to classify jobs according to how hazardous they are.
october revolution — Russian Revolution (def 2).
oedipus at colonus — a tragedy by Sophocles, written toward the end of his life and produced posthumously in 401? b.c.
oil of catechumens — holy oil used in baptism, the ordination of a cleric, the coronation of a sovereign, or in the consecration of a church.
on automatic pilot — If you are on automatic pilot or on autopilot, you are acting without thinking about what you are doing, usually because you have done it many times before.
on delicate ground — in a situation requiring tact
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.
optimum population — a population that is sufficiently large to provide an adequate workforce with minimal unemployment
out of circulation — If someone is out of circulation, they do not appear in public or at social gatherings for a period of time. You can also say that someone is out of circulation when they are in prison.
oxalosuccinic acid — an organic acid, C 6 H 6 O 7 , that is an intermediate formed by the dehydrogenation of isocitric acid in fat and carbohydrate metabolism.
pacinian corpuscle — (sometimes lowercase) a microscopic, onionlike body consisting of layers of connective tissue wrapped around a nerve ending, located in the deep layers of skin, tendons, etc., and functioning as a sensory receptor of pressure and vibration.
parallel computing — parallel processing
parallel evolution — the independent development of closely corresponding adaptive features in two or more groups of organisms that occupy different but equivalent habitats, as marsupial mammals in Australia and placental mammals on other continents.
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.
partial evaluation — (compiler, algorithm) (Or "specialisation") An optimisation technique where the compiler evaluates some subexpressions at compile-time. For example, Partial evaluation might change the termination properties of the program if, for example, the expression (x * 0) was reduced to 0 it would terminate even if x (and thus x * 0) did not. It may be necessary to reorder an expression to partially evaluate it, e.g. f x y = (x + y) + 1 g z = f 3 z If we rewrite f: f x y = (x + 1) + y then the expression x+1 becomes a constant for the function g and we can say g z = f 3 z = (3 + 1) + z = 4 + z Partial evaluation of built-in functions applied to constant arguments is known as constant folding. See also full laziness.
passing modulation — a modulation of a temporary nature.
pennsylvania dutch — the descendants of 17th- and 18th-century settlers in Pennsylvania from southwest Germany and Switzerland.
perceptual mapping — the use of a graph or map in the development of a new product, in which the proximity of consumers' images of the new product to those of an ideal product provide an indication of the new product's likely success
percussion flaking — a method of forming a flint tool by striking flakes from a stone core with another stone or a piece of bone or wood.
percussion welding — a form of resistance welding in which the required pressure is provided by a hammerlike blow.
perlocutionary act — the action of affecting someone by uttering certain words
persistent cruelty — conduct causing fear of danger to the life or health of a spouse (used in matrimonial proceedings before magistrates)
personal insurance — insurance on personal risk, such as car insurance, health insurance or loss of earnings insurance
petroleum engineer — A petroleum engineer is an engineer who is involved in most stages of oil and gas field evaluation, development, and production, whose job is to maximize hydrocarbon recovery and reduce costs and environmental impact.
physical education — systematic instruction in sports, exercises, and hygiene given as part of a school or college program.
phytohemagglutinin — a lectin, obtained from the red kidney bean, that binds to the membranes of T cells and stimulates metabolic activity, cell division, etc.
piperonyl butoxide — a light-brown liquid, C 1 9 H 3 0 O 5 , used chiefly as a synergist in certain insecticides.
pleasure principle — an automatic mental drive or instinct seeking to avoid pain and to obtain pleasure.
plenary indulgence — a remission of the total temporal punishment that is still due to sin after absolution. Compare indulgence (def 6).
plenum ventilation — a system of mechanical ventilation in which fresh air is forced into the spaces to be ventilated from a chamber (plenum chamber) at a pressure slightly higher than atmospheric pressure, so as to expel foul air.
political question — a question regarded by the courts as being a matter to be determined by another department of government rather than of law and therefore one with which they will not deal, as the recognition of a foreign state.
population balance — A population balance is a model showing particle sizes during a grinding process, which is used when designing a process.
population control — a policy of attempting to limit the growth in numbers of a population, esp in poor or densely populated parts of the world, by programmes of contraception or sterilization
population density — ratio: inhabitants to area
population figures — population totals; statistics relating to the size of populations
population pyramid — a graph showing the distribution of a population by sex, age, etc.
portable equipment — Portable equipment is electrical equipment that can easily be moved from one place to another while in operation or while connected to the supply.
portal circulation — blood flow in a portal system.
post-revolutionary — of, pertaining to, characterized by, or of the nature of a revolution, or a sudden, complete, or marked change: a revolutionary junta.
preantepenultimate — third from the end.
presidential suite — a suite of rooms, as in a hotel, suitable for a president or other head of state.
presumption of law — a presumption based upon a policy of law or a general rule and not upon the facts or evidence in an individual case.
presuppositionless — to suppose or assume beforehand; take for granted in advance.
principal argument — the radian measure of the argument between −π and π of a complex number. Compare argument (def 8c).
process scheduling — multitasking
production control — the planning and supervision of manufacturing activities to ensure that goods will be produced on time at the lowest possible cost.
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.
provincial council — (formerly) a council administering any of the New Zealand provinces
pseudointellectual — a person exhibiting intellectual pretensions that have no basis in sound scholarship.

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