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23-letter words containing a, c, e, s

  • cybercrime as a service — (security, legal)   (CaaS) A kind of software as a service that involves performing illegal online activities (cybercrime) on behalf of others for money. Cybercrime as a service represents an evolution of online crime from the sale of illegal products such as malware and exploit kits to offering everything necessary to arrange a cyber fraud or to conduct a cyber attack. As well as providing malicious code, the service provider also rents out the infrastructure to control the distribution and operation of the malware, e.g., bullet-proof hosting or huge botnets.
  • cyclohexylsulfamic acid — cyclamic acid.
  • cylindrical coordinates — three coordinates defining the location of a point in three-dimensional space in terms of its polar coordinates (r, θ) in one plane, usually the (x, y) plane, and its perpendicular distance, z, measured from this plane
  • d'entrecasteaux islands — a group of volcanic islands in the Pacific, off the SE coast of New Guinea: part of Papua New Guinea. Pop: 49 167 (1990 est). Area: 3141 sq km (1213 sq miles)
  • dacryocystorhinostomies — Plural form of dacryocystorhinostomy.
  • data acquisition system — A data acquisition system is a system that acquires data, generally by digitizing analog channels and storing the data in digital form.
  • delayed stress reaction — a post-traumatic stress disorder occurring more than six months after the experience of a traumatic event.
  • descriptive metaphysics — the philosophical study of the structure of how we think about the world
  • deterministic automaton — (theory)   A finite-state automaton in which the overall course of the computation is completely determined by the program, the starting state, and the initial inputs. The class of problems solvable by such automata is the class P (see polynomial-time algorithm).
  • dialectical materialism — the economic, political, and philosophical system of Karl Marx and Friedrich Engels that combines traditional materialism and Hegelian dialectic
  • diamondback rattlesnake — either of two large, highly venomous rattlesnakes of the genus Crotalus, having diamond-shaped markings on the back.
  • differential psychology — the branch of psychology dealing with the study of characteristic differences or variations of groups or individuals, especially through the use of analytic techniques and statistical methods.
  • digital subscriber line — (communications, protocol)   (DSL, or Digital Subscriber Loop, xDSL - see below) A family of digital telecommunications protocols designed to allow high speed data communication over the existing copper telephone lines between end-users and telephone companies. When two conventional modems are connected through the telephone system (PSTN), it treats the communication the same as voice conversations. This has the advantage that there is no investment required from the telephone company (telco) but the disadvantage is that the bandwidth available for the communication is the same as that available for voice conversations, usually 64 kb/s (DS0) at most. The twisted-pair copper cables into individual homes or offices can usually carry significantly more than 64 kb/s but the telco needs to handle the signal as digital rather than analog. There are many implementation of the basic scheme, differing in the communication protocol used and providing varying service levels. The throughput of the communication can be anything from about 128 kb/s to over 8 Mb/s, the communication can be either symmetric or asymmetric (i.e. the available bandwidth may or may not be the same upstream and downstream). Equipment prices and service fees also vary considerably. The first technology based on DSL was ISDN, although ISDN is not often recognised as such nowadays. Since then a large number of other protocols have been developed, collectively referred to as xDSL, including HDSL, SDSL, ADSL, and VDSL. As yet none of these have reached very wide deployment but wider deployment is expected for 1998-1999.
  • digital subscriber loop — Digital Subscriber Line
  • direct distance dialing — a telephone network service feature enabling customers to direct-dial their long-distance calls.
  • discrimination learning — a learning process in which an organism learns to react differently to different stimuli
  • dishonourable discharge — dismissal from the US armed forces by a court martial as a result of serious misconduct
  • disintegration constant — decay constant.
  • disjunctive normal form — (DNF) A logical formula consisting of a disjunction of conjunctions where no conjunction contains a disjunction. E.g. the DNF of (A or B) and C is (A and C) or (B and C).
  • dissociate oneself from — to deny or repudiate any connection with
  • dissociative extraction — Dissociative extraction is when a component is divided between two liquids, which involves breakdown of the component.
  • dollar (cost) averaging — see average (sense 11)
  • draw/make a distinction — If you draw a distinction or make a distinction, you say that two things are different.
  • eastern orthodox church — Orthodox Church (def 1).
  • ecclesiastical calendar — a calendar based on the lunisolar cycle, used by many Christian churches in determining the dates for the movable feasts.
  • education correspondent — a journalist who reports news in the field of education or teaching
  • electron spin resonance — a technique for investigating paramagnetic substances by subjecting them to high-frequency radiation in a strong magnetic field. Changes in the spin of unpaired electrons cause radiation to be absorbed at certain frequencies
  • electronic mail address — (messaging)   (Usually "e-mail address") The string used to specify the source or destination of an electronic mail message. E.g. "[email protected]". The RFC 822 standard is probably the most widely used on the Internet. X.400 was once used in Europe and Canada. UUCP-style (bang path) addresses or other kinds of source route became virtually extinct in the 1990s. In the example above, "john" is the local part which is the name of a mailbox on the destination computer. If the sender and recipient use the same computer, or the same LAN, for electronic mail then the local part is usually all that is required. If they use different computers, e.g. they work at different companies or use different Internet service providers, then the "host part", e.g. "sales.acme.com" must be appended after an "@". This usually takes the form of a fully qualified domain name or, within a large organisation, it may be just the hostname part, e.g. "sales". The destination computer named by the host part is usually a server of some kind rather than an individual's workstation or PC. The user's mail is stored on the server and read later via client mail software running on the user's computer. Large organisations, such as universities will often set up a global alias directory which maps a simple user name such as "jsmith" to an address which contains more information such as "[email protected]". This hides the detailed knowledge of where the message will be delivered from the sender, making it much easier to redirect mail if a user leaves or moves to a different department for example.
  • electronic surveillance — use of electronic devices to spy, observe
  • electrostatic discharge — (hardware, testing)   (ESD) One kind of test that hardware usually has to pass to prove it is suitable for sale and use. The hardware must still work after is has been subjected to some level of electrostatic discharge. Some organisations have their own ESD requirements which hardware must meet before it will be considered for purchase. Different countries have different legal regulations about levels of ESD. See also Radio Frequency Interference, Electromagnetic Compatibility.
  • electrostatic generator — any device for producing a high voltage by building up a charge of static electricity
  • embarrassment of riches — If you say that someone has an embarrassment of riches, you mean that they have so many good things that these things are a problem.
  • encapsulated postscript — (EPS) An extension of the PostScript graphics file format developed by Adobe Systems. EPS is used for PostScript graphics files that are to be incorporated into other documents. An EPS file includes pragmas (special PostScript comments) giving information such as the bounding box, page number and fonts used. On some computers, EPS files include a low resolution version of the PostScript image. On the Macintosh this is in PICT format, while on the IBM PC it is in TIFF or Microsoft Windows metafile format.
  • encephalitis lethargica — a form of encephalitis, or sleeping sickness, epidemic in the period from 1915 to 1926
  • entrance qualifications — academic requirements
  • exchange rate mechanism — European financial system
  • experimental psychology — the scientific study of the individual behaviour of man and other animals, esp of perception, learning, memory, motor skills, and thinking
  • extended graphics array — (hardware)   (XGA) An IBM display standard introduced in 1990. XGA supports a resolution of 1024 x 768 pixels with a palette of 256 colours, or 640 x 480 with high colour (16 bits per pixel). XGA-2 added 1024 x 768 support for high colour and higher refresh rates, improved performance, and supports 1360 x 1024 in 16 colours. XGA is probably not the same as 8514-A. See also VESA's EVGA released at a similar time.
  • extracorporeal dialysis — the filtering of circulating blood through a semipermeable membrane in an apparatus
  • extrasensory perception — Extrasensory perception means knowing without using your ordinary senses such as sight and hearing. Some people believe this is possible. The abbreviation ESP is also used.
  • fall between the cracks — to fail to fit into a given agenda or program
  • fall flat on one's face — to fail, esp in a ridiculous or humiliating manner
  • fall through the cracks — to break without complete separation of parts; become fissured: The plate cracked when I dropped it, but it was still usable.
  • fendalton shopping cart — a four-wheel drive recreational vehicle
  • field effect transistor — a transistor in which the output current is varied by varying the value of an electric field within a region of the device. Abbreviation: FET.
  • field-effect transistor — a transistor in which the output current is varied by varying the value of an electric field within a region of the device. Abbreviation: FET.
  • firing on all cylinders — working or performing at full capability
  • first earl of leicester — Robert, 1st Earl of Leicester, 1532?–88, British statesman and favorite of Queen Elizabeth.
  • first strike capability — the ability to use nuclear missiles in an opening attack calculated to destroy the enemy's nuclear weapons
  • five-and-ten-cent store — a store that sells a wide variety of inexpensive merchandise, orig. with many articles priced at five or ten cents
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