20-letter words containing x, e, n, o, t, r
- antimony oxychloride — a white, water-insoluble powder, SbOCl, used chiefly in the manufacture of antimony salts.
- asexual reproduction — reproduction, as budding, fission, or spore formation, not involving the union of gametes.
- auxiliary power unit — an additional engine fitted to an aircraft to operate when the main engines are not in use
- bring x to its knees — To present a computer, operating system, piece of software, or algorithm with a load so extreme or pathological that it grinds to a halt. "To bring a MicroVAX to its knees, try twenty users running vi - or four running Emacs." Compare hog.
- context-free grammar — (grammar) (CFG) A grammar where the syntax of each constituent (syntactic category or terminal symbol) is independent of the symbols occuring before and after it in a sentence. A context-free grammar describes a context-free language. Context-free grammars can be expressed by a set of "production rules" or syntactic rules. For example, a language with symbols "a" and "b" that must occur in unequal numbers can be represented by the CFG: S → U | V U → TaU | TaT | UaT V → TbV | TbT | VbT T → aTbT | bTaT | ε meaning the top-level category "S" consists of either a "U" or a "V" and so on. The special category "ε" represents the empty string. This grammar is context-free because each rule has a single symbol on its left-hand side.
- controlled explosion — the deliberate detonation of an explosive device under strictly controlled circumstances
- coordination complex — one of a number of complex compounds in which an atom or group of atoms is bound to the central atom by a shared pair of electrons supplied by the coordinated group and not by the central atom
- deoxyribonucleotides — Plural form of deoxyribonucleotide.
- depreciation expense — A depreciation expense is the amount deducted from gross profit to allow for a reduction in the value of something because of its age or how much it has been used.
- dinitrogen tetroxide — a colourless gaseous substance that exists in equilibrium with nitrogen dioxide. As the temperature is reduced the proportion of the tetroxide increases. Formula: N2O4
- entrance examination — admission test
- epitaxial transistor — a transistor made by depositing a thin pure layer of semiconductor material (epitaxial layer) onto a crystalline support by epitaxy. The layer acts as one of the electrode regions, usually the collector
- external respiration — exchange of oxygen and carbon dioxide across external or respiratory surfaces, as gills or lungs, in multicellular organisms
- fixed action pattern — a highly stereotyped pattern of behavior that is characteristic of a particular species.
- fixed-price contract — a contract in which the price is preset and invariable, regardless of the actual costs of production.
- hexafluoroantimonate — (inorganic chemistry) The anion SbF6- or any salt containing this anion; it is used as an acidic catalyst in epoxide opening reactions.
- in the lap of luxury — If you say that someone lives in the lap of luxury, you mean that they live in conditions of great comfort and wealth.
- income tax inspector — a person whose job is to assess individuals' income tax liability
- information exchange — discussion that involves exchanging ideas and knowledge
- kármán vortex street — a regular stream of vortices shed from a body placed in a fluid stream: investigated by Kármán who advanced a formula for the frequency of the shed vortices in terms of the stream velocity and the dimensions of the body
- linear extrapolation — Statistics, Mathematics. extrapolation using a linear equation to estimate the value of a variable or function outside the tabulated or observed range.
- mannitol hexanitrate — a colorless, crystalline, water-insoluble, explosive solid, C 6 H 8 N 6 O 1 8 , used as a fulminating agent in percussion caps and in the treatment of hypertension and coronary insufficiency.
- menstrual extraction — an abortion procedure involving suction aspiration of the uterine contents early in gestation, before the first missed menstrual period: sometimes performed later.
- microcrystalline wax — Microcrystalline wax is a wax used as a stiffening agent and as a coating agent for tablets and capsules.
- next program counter — (architecture) (nPC) A register in a CPU that contains the address of the instruction to be executed next.
- organization expense — the costs associated with organizing a business entity and bringing it into existence
- peremptory exception — a plea in bar of an action.
- peroxyacetyl nitrate — an unstable nitrogen compound, found in certain types of smog, that is an irritant, esp. to the eyes and to plants
- phosphorus pentoxide — a white, deliquescent, crystalline powder, P 2 O 5 , that, depending upon the amount of water it absorbs, forms orthophosphoric acid, metaphosphoric acid, or pyrophosphoric acid, produced by the burning of phosphorus in dry air: used in the preparation of phosphoric acids, as a drying and dehydrating agent, and in organic synthesis.
- sex change operation — a surgical operation designed to change a person's physical sexual characteristics to those of the opposite sex
- toxemia of pregnancy — an abnormal condition of pregnancy characterized by hypertension, fluid retention, edema, and the presence of protein in the urine.
- toxic shock syndrome — a rapidly developing, sometimes fatal infection characterized by sudden onset of fever, gastrointestinal upsets, a sunburnlike rash, and a drop in blood pressure: caused by a Staphylococcus aureus toxin and occurring especially in menstruating women using high-absorbency tampons. Abbreviation: TSS.
- trailing vortex drag — drag arising from vortices that occur behind a body moving through a gas or liquid
- university extension — a system by which an institution provides educational programs, as evening classes, for students otherwise unable to attend.
- xerox network system — (networking) (XNS) A proprietary network architecture developed by the Xerox Office Systems Division of Xerox corporation at Xerox PARC in the late 1970s/early 1980s to run on LAN (Ethernet) and WAN networks. The XNS protocol stack provided routing and packet delivery. Implementations exist for 4.3BSD derived systems and the Xerox Star computers. Novell based much of the lower layers of their protocol suite IPX/SPX on XNS. The main components are: Internet datagram protocol (IDP), Routing information protocol (RIP), Packet Exchange protocol (PEP), and Sequences packet protocol (SPP). XNS has strong parellels to TCP/IP in that the network layer, IDP, is roughly equivalent to IP. RIP has the same functions (and obviously name) as the routing information protocol, RIP. SPP, a connectionless transport layer protocol, is similar to UDP. PEP is also in the transport layer but is connection-oriented and similar to TCP. XNS specifically is no longer in use due to the all pervasiveness of IP. XNS denotes not only the protocol stack, but also an architecture of standard programming interfaces, conventions, and service functions for authentication, directory, filing, e-mail, and remote procedure call. XNS is also the name of Xerox's implementation. Many PC networking companies, such as 3Com, Banyan, Novell, and Ungermann-Bass Networks used or use a variation of XNS as their primary transport protocol. XNS was desigined to be used across a variety of communication media, processors, and office applications. UB, (now a part of Tandem Computers) adopted XNS in developing its Net/One XNS routing protocol.
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