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

production control — the planning and supervision of manufacturing activities to ensure that goods will be produced on time at the lowest possible cost.
programme planning — the act of creating plans or schedules, esp in relation to your occupation
programming skills — the skills required to write a program so that data may be processed by a computer
proportional limit — elastic limit.
proprietary colony — any of certain colonies, as Maryland and Pennsylvania, that were granted to an individual or group by the British crown and that were granted full rights of self-government.
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.
psychotechnologist — a specialist in psychotechnology
public convenience — a rest room, especially at a large public place, as at a railroad station.
public corporation — a corporation, owned and operated by a government, established for the administration of certain public programs.
public examination — an examination, such as a GCSE exam, that is set by a central examining board
public expenditure — spending by central government, local authorities, and public corporations
publicity campaign — an effort to convey information to the public
publishing company — a firm which publishes books
pull one's head in — the upper part of the body in humans, joined to the trunk by the neck, containing the brain, eyes, ears, nose, and mouth.
pulmonary embolism — the blockage of a pulmonary artery, often by a blood clot, that stops the flow of blood to the lungs and which can result in death if untreated
pulmonic airstream — a current of lung air set in motion by the respiratory muscles in the production of speech.
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
radical expression — an expression in which radical signs appear.
rail rapid transit — a system of rail transit within an urban area that has exclusive right of way either below, above, or on the ground and so is capable of relatively high operating speed. Abbreviation: RRT.
rational operation — any of the mathematical operations of addition, subtraction, multiplication, and division.
reentering polygon — a polygon having one or more reentering angles.
registration plate — a plate mounted on the front and back of a motor vehicle bearing the registration number
regular expression — 1. (text, operating system) (regexp, RE) One of the wild card patterns used by Perl and other languages, following Unix utilities such as grep, sed, and awk and editors such as vi and Emacs. Regular expressions use conventions similar to but more elaborate than those described under glob. A regular expression is a sequence of characters with the following meanings (in Perl, other flavours vary): An ordinary character (not one of the special characters discussed below) matches that character. A backslash (\) followed by any special character matches the special character itself. The special characters are: "." matches any character except newline; "RE*" (where RE is any regular expression and the "*" is called the "Kleene star") matches zero or more occurrences of RE. If there is any choice, the longest leftmost matching string is chosen. "^" at the beginning of an RE matches the start of a line and "$" at the end of an RE matches the end of a line. (RE) matches whatever RE matches and \N, where N is a digit, matches whatever was matched by the RE between the Nth "(" and its corresponding ")" earlier in the same RE. Many flavours use $RE$ instead of just (RE). The concatenation of REs is a RE that matches the concatenation of the strings matched by each RE. RE1 | RE2 matches whatever RE1 or RE2 matches. \< matches the beginning of a word and \> matches the end of a word. Many flavours use "\b" instead as the special character for "word boundary". RE{M} matches M occurences of RE. RE{M,} matches M or more occurences of RE. RE{M,N} matches between M and N occurences. Other flavours use RE\{M\} etc. Perl provides several "quote-like" operators for writing REs, including the common // form and less common ??. A comprehensive survey of regexp flavours is found in Friedl 1997 (see below). 2. Any description of a pattern composed from combinations of symbols and the three operators: Concatenation - pattern A concatenated with B matches a match for A followed by a match for B. Or - pattern A-or-B matches either a match for A or a match for B. Closure - zero or more matches for a pattern. The earliest form of regular expressions (and the term itself) were invented by mathematician Stephen Cole Kleene in the mid-1950s, as a notation to easily manipulate "regular sets", formal descriptions of the behaviour of finite state machines, in regular algebra.
reinforced plastic — plastic with fibrous matter, such as carbon fibre, embedded in it to confer additional strength
replacement engine — an engine used to replace or substitute an older or broken engine (in a vehicle, etc)
reprocessing plant — a plant where materials are treated in order to make them reusable
resistance plasmid — any of a group of bacterial plasmids carrying genetic information that provide resistance to antibiotic drugs: some resistance plasmids are able to transfer themselves, and hence resistance, during conjugation
resurrection plant — a desert plant, Selaginella lepidophylla, occurring from Texas to South America, having stems that curl inward when dry.
retail price index — The retail price index is a list of the prices of typical goods which shows how much the cost of living changes from one month to the next.
ribbon development — housing or commercial buildings built along a stretch of road.
rural municipality — any lightly settled area in Canada lacking a local elected government and administered directly by a provincial government.
sampling equipment — Sampling equipment is equipment which is used to remove small amounts of something for analysis and monitoring.
sampling frequency — sample rate
sampling statistic — any function of observed data, esp one used to estimate the corresponding parameter of the underlying distribution, such as the sample mean, sample variance, etc
scripting language — a language that is used to write scripts, or executable sections of code that automate tasks.
seafloor spreading — a process in which new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out.
seasonal promotion — Seasonal promotions are items marketed to customers at the appropriate time of year, such as coats in the winter and bathing suits in the summer.
secondary syphilis — the second stage of syphilis, characterized by eruptions of the skin and mucous membrane.
self-comprehending — to understand the nature or meaning of; grasp with the mind; perceive: He did not comprehend the significance of the ambassador's remark.
self-contemplation — the act or process of thinking about oneself or one's values, beliefs, behavior, etc.
self-deprecatingly — in a self-deprecating manner
self-disparagement — the act of disparaging.
self-preoccupation — the state of being preoccupied.
self-tapping screw — a screw designed to tap its corresponding female thread as it is driven.
sierra blanca peak — a mountain in S New Mexico: highest peak in the Sacramento Mountains. 11,997 feet (3651 meters).
silvery spleenwort — a fern, Diplazium pycnocarpon, of eastern North America, having fronds from 20 to 30 inches (50.8 to 76.2 cm) long on yellowish-green stalks.
simple enumeration — a procedure for arriving at empirical generalizations by haphazard accumulation of positive instances.
sleeping policeman — a bump built across roads, esp in housing estates, to deter motorists from speeding

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