18-letter words that end in ion
- 16-bit application — (operating system) Software for MS-DOS or Microsoft Windows which originally ran on the 16-bit Intel 8088 and 80286 microprocessors. These used a segmented address space to extend the range of addresses from what is possible with just a 16-bit address. Programs with more than 64 kilobytes of code or data therefore had to waste time switching between segments. Furthermore, programming with segments is more involved than programming in a flat address space, giving rise to warts like memory models in C and C++. Compare 32-bit application.
- 32-bit application — (architecture, operating system) IBM PC software that runs in a 32-bit flat address space. The term 32-bit application came about because MS-DOS and Microsoft Windows were originally written for the Intel 8088 and 80286 microprocessors. These are 16 bit microprocessors with a segmented address space. Programs with more than 64 kilobytes of code and/or data therefore had to switch between segments quite frequently. As this operation is quite time consuming in comparison to other machine operations, the application's performance may suffer. Furthermore, programming with segments is more involved than programming in a flat address space, giving rise to some complications in programming languages like "memory models" in C and C++. The shift from 16-bit software to 32-bit software on IBM PC clones became possible with the introduction of the Intel 80386 microprocessor. This microprocessor and its successors support a segmented address space with 16-bit and 32 bit segments (more precisely: segments with 16- or 32-bit address offset) or a linear 32-bit address space. For compatibility reasons, however, much of the software is nevertheless written in 16-bit models. See also Win32s.
- acid precipitation — meteorological precipitation that is relatively acidic.
- acute inflammation — body's response to infection
- adaptive radiation — evolution of a number of divergent species from a common ancestor, each species becoming adapted to occupy a different environment. This type of evolution occurred in the Tertiary manuals and the Mesozoic reptiles
- address resolution — (networking) Conversion of an Internet address into the corresponding physical address (Ethernet address). This is usually done using Address Resolution Protocol. The resolver is a library routine and a set of processes which converts hostnames into Internet addresses, though this process in not usually referred to as resolution. See DNS.
- adverse possession — the occupation or possession of land by a person not legally entitled to it. If continued unopposed for a period specifed by law, such occupation extinguishes the title of the rightful owner
- affirmative action — Affirmative action is the policy of giving jobs and other opportunities to members of groups such as racial minorities or women who might not otherwise have them.
- age discrimination — discrimination against older people, especially by employers
- alcoholic solution — An alcoholic solution is mixture of water and ethanol, used as a solvent.
- algebraic equation — an equation in the form of a polynomial having a finite number of terms and equated to zero, as 2 x 3 + 4 x 2 − x + 7 = 0.
- algebraic function — any function which can be constructed in a finite number of steps from the elementary operations and the inverses of any function already constructed
- algebraic notation — the standard method of denoting the squares on the chessboard, by allotting a letter, a, b, c, up to h, to each of the files running up the board from White's side, starting from the left, and a number to each of the ranks across the board, starting with White's first rank
- amdahl corporation — (company) A US computer manufacturer. Amdahl is a major supplier of large mainframes, UNIX and Open Systems software and servers, data storage subsystems, data communications products, applications development software, and a variety of educational and consulting services. Amdahl products are sold in more than 30 countries for use in both open systems and IBM plug-compatible mainframe computing environments. Quarterly sales $397M, profits $13M (Aug 1994). In 1997 Amdahl became a division of Fujitsu.
- angle of deviation — the angle between the direction of the refracted ray and the direction of the incident ray when a ray of light passes from one medium to another
- angle of elevation — elevation (def 8a).
- anglican communion — a group of Christian Churches including the Church of England, the Church of Ireland, the Episcopal Church in Scotland, the Church in Wales, and the Episcopal Church in the US, all of which are in full communion with each other
- angular dispersion — a measure of the angular separation of light rays of different wavelength or color traversing a prism or diffraction grating, equal to the rate of change of the angle of deviation with respect to the change in wavelength.
- anti-globalization — a political belief opposed to the emergence of a single world market dominated by multinational companies
- anti-miscegenation — marriage or cohabitation between two people from different racial groups, especially, in the U.S., between a black person and a white person: In 1968 the Supreme Court ruled unanimously that state laws prohibiting miscegenation were unconstitutional.
- antidiscrimination — (legal) Opposing or disallowing discrimination.
- appellate division — the section of a court that hears appeals, sometimes existing as an intermediate court between a trial court and a court of last resort.
- armed intervention — an official response to a situation which involves the armed forces
- army of occupation — an army that goes into a defeated country to enforce peace terms, keep order, etc.
- authorized version — the revised English translation of the Bible published in England in 1611 with the authorization of King James I
- auxiliary equation — characteristic equation (def 1b).
- auxiliary-equation — Mathematics. the characteristic polynomial of a given matrix, equated to zero. Also called auxiliary equation. an equation with one variable and equated to zero, which is derived from a given linear differential equation and in which the coefficient and power of the variable in each term correspond to the coefficient and order of a derivative in the original equation.
- axile placentation — a type of placenta structure in an ovary with the ovules forming at the angles where the septa join the central placenta
- axis of revolution — an axis in a plane, about which an area is revolved to form a solid of revolution.
- beauty competition — a competition in which the participants, usually women, are judged on their attractiveness, with a prize, and often a title, awarded to the winner
- benchmark position — a public service job used for comparison with a similar position, such as a position in commerce, for wage settlements
- bernoulli equation — Hydrodynamics. Bernoulli's theorem (def 2).
- biodiversification — the process by which the diversity of plants or animals develops or is increased within a particular region or group of organisms.
- bioinstrumentation — the use of instruments, as sensors, to detect and measure certain body functions, as of persons in spaceflight, and transmit the data to a point where it is evaluated
- board of education — a group or agency with responsibility for education
- bone of contention — If a particular matter or issue is a bone of contention, it is the subject of a disagreement or argument.
- boundary condition — a stated restriction, usually in the form of an equation, that limits the possible solutions to a differential equation.
- branch instruction — a machine-language or assembly-language instruction that causes the computer to branch to another instruction
- branching fraction — (in branching) the proportion of the disintegrating nuclei that follow a particular branch to the total number of disintegrating nuclides
- burrell collection — a gallery in Glasgow, noted for its collection of paintings, textiles, furniture, ceramics, etc
- business education — education for general knowledge of business practices.
- call into question — to raise a question or doubt about
- calling convention — (programming) The arrangement of arguments for a procedure or function call. Different programming languages may require arguments to be pushed onto a stack or entered in registers in left-to-right or right-to left order, and either the caller or the callee can be responsible for removing the arguments. The calling convention also determines if a variable number of arguments is allowed.
- cassini's division — the gap that divides Saturn's rings into two parts, discovered by Giovanni Domenico Cassini (1625–1712) in 1675
- ceiling decoration — a plaster moulding for the centre of a ceiling; other decoration, such as coving
- central projection — a projection of one plane onto a second plane such that a point on the first plane and its image on the second plane lie on a straight line through a fixed point not on either plane.
- cerenkov radiation — radiation emitted when a charged particle travels through a medium at a speed greater than the speed of light through that medium
- charge conjugation — the mathematical operation of replacing every elementary particle by its antiparticle. Symbol: C.
- chebyshev equation — Tchebycheff equation.
- check verification — Check verification is a system that checks national databases of information about individuals to make sure that checks will be honored and fraud is not being committed.
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