18-letter words containing o, a, x
- alexander hamilton — Alexander, 1757–1804, American statesman and writer on government: the first Secretary of the Treasury 1789–97; mortally wounded by Aaron Burr in a duel.
- alexius i comnenus — 1048–1118, ruler of the Byzantine Empire (1081–1118)
- alpha-hydroxy acid — a type of organic acid, commonly used in skin-care preparations, that has a hydroxyl group attached to the carbon atom next to the carbon atom carrying the carboxyl group
- aluminum hydroxide — a white powder, Al(OH)3, obtained from bauxite and used to make glass, paper, etc. and in antacids
- ammonium hydroxide — a compound existing only in aqueous solution, formed when ammonia dissolves in water to form ammonium ions and hydroxide ions. Formula: NH4OH
- antimony pentoxide — a white or yellowish, water-insoluble powder, Sb 2 O 5 , used chiefly in the synthesis of antimonates.
- association cortex — any of the regions of the cerebral cortex of the brain connected by numerous nerve fibers to all parts of both cerebral hemispheres and coordinating such higher activities as learning and reasoning.
- associative cortex — the part of the cortex that does not have direct connections to the senses or motor system and is thought to be involved in higher mental processes
- automatic exposure — the automatic adjustment of the lens aperture and shutter speed of a camera by a control mechanism
- 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
- axiological ethics — the branch of ethics dealing primarily with the relative goodness or value of the motives and end of any action.
- axis of revolution — an axis in a plane, about which an area is revolved to form a solid of revolution.
- baritone saxophone — the second lowest instrument in the family of saxophones
- black nickel oxide — a gray-black, water-insoluble powder, Ni 2 O 3 , which, at 600°C, decomposes to nickel oxide: used chiefly in storage batteries as an oxidizing agent.
- board of examiners — a group of people who officially administer examinations
- borax pentahydrate — a white, crystalline, water-soluble solid, Na 2 B 4 O 7 ⋅5H 2 O, used chiefly for killing weeds, as a water softener, and as a disinfectant and deodorizing agent.
- carboxyhaemoglobin — haemoglobin coordinated with carbon monoxide, formed as a result of carbon monoxide poisoning. As carbon monoxide is bound in preference to oxygen, tissues are deprived of oxygen
- castration complex — an unconscious fear of having one's genitals removed, as a punishment for wishing to have sex with a parent
- commodity exchange — an exchange where commodities are traded
- complexity measure — (algorithm) A quantity describing the complexity of a computation.
- corporate anorexia — a malaise of a business organization resulting from making too many creative people redundant in efforts to cut costs
- customs and excise — Customs and Excise is a British government department which is responsible for collecting taxes on imported and exported goods. Compare Customs Service.
- direct examination — the first interrogation of a witness by the side that has called that witness.
- dot matrix printer — (hardware, printer) A kind of printer with a vertical column of up to 48 small closely packed needles or "pins" each of which can be individually forced forward to press an ink ribbon against the paper. The print head is repeatedly scanned across the page and different combinations of needles activated at each point. Dot matrix printers are noisy compared to non-impact printers.
- dot-matrix printer — device: prints using matrix dots
- dragline excavator — a power shovel that operates by being dragged by cables at the end of an arm or jib: used for quarrying, opencast mining, etc
- ejaculatio praecox — premature ejaculation during sexual intercourse
- electronic mailbox — a device used to store electronic mail
- examination script — a script with answers written on it by an examination candidate taking a written examination
- excess profits tax — a tax on profits exceeding a certain amount
- exchange programme — an arrangement in which people from different countries visit each other's country, perhaps to strengthen links between them or to improve foreign language skills
- executable content — (operating system) Executable programs sent by one computer to another via a network. For example a Java applet is executable content. Usage: rare.
- exercise programme — a programme detailing a range of physical exercises and the amount of time each exercise should be performed, used especially in gymnasiums, where they are typically tailored to individuals' needs
- extemporaneousness — The degree or property of being extemporaneous.
- extermination camp — a camp where people are imprisoned and killed
- feast of orthodoxy — a solemn festival held on the first Sunday of Lent (Orthodoxy Sunday) commemorating the restoration of the use of icons in the church (a.d. 842) and the triumph over all heresies.
- filename extension — (filename extension) The portion of a filename, following the final point, which indicates the kind of data stored in the file - the file type. Many operating systems use filename extensions, e.g. Unix, VMS, MS-DOS, Microsoft Windows. They are usually from one to three letters (some sad old OSes support no more than three). Examples include "c" for C source code, "ps" for PostScript, "txt" for arbitrary text. Apart from informing the user what type of content the file holds, filename extensions are typically used to decide which program to launch when a file is "run", e.g. by double-clicking it in a GUI file browser. They are also used by Unix's make to determine how to build one kind of file from another. Compare: MIME type.
- fixed-focus camera — a camera with an unadjustable focal length and with a relatively large depth of field.
- fixed-radio access — Wireless Local Loop
- fragile x syndrome — a widespread form of mental retardation caused by a faulty gene on the X chromosome.
- fragile-x syndrome — an inherited condition characterized by learning disability: affected individuals have an X-chromosome that is easily damaged under certain conditions
- great expectations — a novel (1861) by Charles Dickens.
- hexachlorobiphenyl — (organic compound) Either of forty-two isomers of the polychlorinated biphenyl containing six chlorine atoms.
- hexaphosphorylated — (biochemistry) phosphorylated with six units of phosphoric acid.
- hydroxyacetic acid — glycolic acid.
- hydroxynaphthalene — naphthol.
- hydroxytryptamines — Plural form of hydroxytryptamine.
- hypersexualisation — Alternative spelling of hypersexualization.
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