25-letter words containing i, n, e, l

national insurance number — a number allocated to UK citizens so that they can pay national insurance
national liberation front — the name taken by nationalist insurgent groups in various countries.
national portrait gallery — an art gallery in London, established in 1856, displaying portraits and photographs of eminent figures in British history
national security council — the council, composed of the president, vice president, secretary of state, secretary of defense, director of the Central Intelligence Agency and the chairman of the Joint Chiefs of Staff, that determines means by which domestic, foreign, and military policy can best be integrated for safeguarding the national security. Abbreviation: NSC.
national unity government — a government formed by a coalition of parties, esp in time of national emergency
neurocirculatory asthenia — cardiac neurosis.
never do things by halves — If you say that someone never does things by halves, you mean that they always do things very thoroughly.
new england boiled dinner — boiled dinner.
non-algorithmic procedure — heuristic
normal equivalent deviate — a value x such that the integral of a normal curve over all those values of the independent variable less than x is equal to the given probability.
northern corn-leaf blight — northern leaf blight.
nuffield teaching project — (in Britain) a complete school programme in mathematics, science, languages, etc, with suggested complementary theory and practical work
object relational mapping — (programming, database) (ORM) The software development activity that defines a correspondence between objects in a program and rows in a database table. Atomic object properties correspond to columns in the table, non-atomic data types and relations between objects are represented as foreign keys referring to other tables. An object persistence mechanism is responsible for maintaining the correspondence between objects and the database contents at run-time.
oblique circular cylinder — a cylinder generated by the revolution of a parallelogram other than a rectangle about one of its sides.
observational equivalence — Two terms M and N are observationally equivalent iff for all contexts C[] where C[M] is a valid term, C[N] is also a valid term with the same value.
on the big/small etc side — If you say that something is on the small side, you are saying politely that you think it is slightly too small. If you say that someone is on the young side, you are saying politely that you think they are slightly too young.
on the horns of a dilemma — one of the bony, permanent, hollow paired growths, often curved and pointed, that project from the upper part of the head of certain ungulate mammals, as cattle, sheep, goats, or antelopes.
on the side of the angels — If you say that someone is on the side of the angels, you believe very strongly that what they are doing is right.
open educational resource — Usually, open educational resources. a piece of content or a tool for teaching or learning, often developed online, that is made available free of charge for anyone to use, revise, adapt, or redistribute. Abbreviation: OER.
orpheus in the underworld — a classical operetta; the French name is Orphée aux enfers
oxidative phosphorylation — the aerobic synthesis, coupled to electron transport, of ATP from phosphate and ADP.
page description language — a high-level programming language for determining the output of a page printer designed to work with it, independent of the printer's internal codes. Abbreviation: PDL.
pauli exclusion principle — exclusion principle.
peripheral nervous system — the portion of the nervous system lying outside the brain and spinal cord.
permanent virtual circuit — (networking) (PVC, or in ATM terminology, "Permanent Virtual Connection") A virtual circuit that is permanently established, saving the time associated with circuit establishment and tear-down.
personal flotation device — a life preserver, life jacket, or other device for keeping a person afloat in the water. Abbreviation: PFD.
personal injury insurance — Personal injury insurance is coverage for treatment of injuries to car accident victims, including loss of work income, accidental death, and funeral expenses.
personal-opinion telegram — a type of domestic telegram sent at the lowest rate with a minimum charge for 20 words or less to elected federal or state officials on a subject of national or regional interest.
personalized number plate — a car registration plate that has the owner's initials or name on it
pick/take up the gauntlet — If you pick up the gauntlet or take up the gauntlet, you accept the challenge that someone has made.
play into someone's hands — a dramatic composition or piece; drama.
please clean my room sign — A please clean my room sign is a sign that a guest in a hotel hangs outside their room to tell the cleaner the room is available for cleaning.
point-and-drool interface — (abuse) (Or "point-and-grunt interface") A parody of "point-and-shoot interface", describing a windows, icons, and mouse-based (WIMP) graphical user interface. The implication, of course, is that such an interface is only suitable for idiots. See for the rest of us, WIMP, drool-proof paper.
polycystic ovary syndrome — a hormonal disorder in which the Graafian follicles in the ovary fail to develop completely so that they are unable to ovulate, remaining as multiple cysts that distend the ovary. The results can include reduced fertility, obesity, and hirsutism
polymerase chain reaction — a technique in which a known DNA sequence is synthesized at high temperatures by means of a polymerase, producing millions of copies for statistical analysis: used in DNA fingerprinting, in detecting minute quantities of cancer cells, etc.
polynomial-time algorithm — (complexity) A known algorithm (or Turing Machine) that is guaranteed to terminate within a number of steps which is a polynomial function of the size of the problem. See also computational complexity, exponential time, nondeterministic polynomial-time (NP), NP-complete.
portable network graphics — (file format) /ping/ (PNG) An extensible file format for the lossless, portable, well-compressed storage of raster images. PNG provides a patent-free replacement for GIF and can also replace many common uses of TIFF. Indexed-colour, greyscale and truecolour images are supported, plus an optional alpha channel. Sample depths range from 1 to 16 bits. PNG is designed for on-line viewing applications, such as the World Wide Web, so it is fully streamable with a progressive display option. PNG is robust, providing both full file integrity checking and simple detection of common transmission errors. Also, PNG can store gamma correction and chromaticity data for improved colour matching on heterogeneous platforms.
positional representation — (mathematics) The conventional way of writing numbers as a string of digits in which each digit, D, has value D * R^I, where R is the radix or (number) base and I is the digit's position counting leftward from zero at the least significant (right-hand) end. Each digit can be zero to R-1. Each position has a weight or significance R times greater than the position to its right and the right-most place has a weight of one. Decimal numbers are radix ten, binary numbers are radix two, octal radix eight and hexadecimal radix 16. Positional representation makes arithmetic operations on large numbers much easier than, say, roman numerals. It is fundamental to the binary representation used by digital computers.
prices and incomes policy — voluntary or statutory regulation of the level of increases in prices and incomes
primary domain controller — (networking) (PDC) Each Windows NT domain has a Primary Domain Controller and zero or more Backup Domain Controllers. The PDC holds the SAM database and authenticates access requests from workstations and servers in the domain.
principal nursing officer — a grade of nurse concerned with administration in the British National Health Service
principle of indifference — the principle that, in the absence of any reason to expect one event rather than another, all the possible events should be assigned the same probability
principle of least action — the principle that motion between any two points in a conservative dynamical system is such that the action has a minimum value with respect to all paths between the points that correspond to the same energy
principle of virtual work — the principle that the total work done by all forces on a system in static equilibrium is zero for a set of infinitesimally small displacements.
private international law — conflict of laws (def 2).
process design language 2 — (language) (PDL2) A language developed for the Texas Instruments ASC computer.
profit and loss statement — A profit and loss statement is a statement that is compiled at the end of a financial year showing that year's revenue and expense items and indicating gross and net profit or loss.
public inter national law — Also called public law. the law governing the legal relations between independent states or nations and, increasingly, between these and individuals.
public key infrastructure — (cryptography, communications) (PKI) A system of public key encryption using digital certificates from Certificate Authorities and other registration authorities that verify and authenticate the validity of each party involved in an electronic transaction. PKIs are currently evolving and there is no single PKI nor even a single agreed-upon standard for setting up a PKI. However, nearly everyone agrees that reliable PKIs are necessary before electronic commerce can become widespread.
public relations exercise — something which is done for the sake of attracting favourable publicity

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