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19-letter words containing a, g

  • data link switching — (networking)   (DLSw) A standard for transporting IBM Systems Network Architecture (SNA) and network basic input/output system (NetBIOS) traffic over an Internet protocol network. Initially, in 1992, DLSw was proprietary to IBM. It was submitted to the IETF as RFC 1434 in 1993, later updated by RFC 1795.
  • database management — the maintenance of information stored in a computer system
  • de broglie equation — the postulate of wave mechanics that a particle of mass m moving at a velocity v will have the properties of a wave of wavelength h / mv (de Broglie wavelength) where h is Planck's constant.
  • dendrochronological — Pertaining to dendrochronology.
  • desargues's theorem — the theorem that if two triangles are so related that the lines joining corresponding vertices meet in a point, then the extended corresponding lines of the two triangles meet in three points, all on the same line.
  • descriptive grammar — an approach to grammar that is concerned with reporting the usage of native speakers without reference to proposed norms of correctness or advocacy of rules based on such norms.
  • design in real time — (programming)   (Dirt) A user interface builder for the X Window System by R. Hesketh.
  • diamond ring effect — a phenomenon, sometimes observed immediately before and after a total eclipse of the sun, in which one of Baily's beads is much brighter than the others, resembling a diamond ring around the moon.
  • diffraction grating — a band of equidistant, parallel lines, usually more than 5000 per inch (2000 per centimeter), ruled on a glass or polished metal surface for diffracting light to produce optical spectra.
  • dig one's own grave — If you say that someone is digging their own grave, you are warning them that they are doing something foolish or dangerous that will cause their own failure.
  • digital certificate — (communications, security)   An attachment to an electronic mail message used for security purposes, e.g. to verify that a user sending a message is who he or she claims to be, and to provide the receiver with the means to encode a reply. An individual wishing to send an encrypted message applies for a digital certificate from a certificate authority (CA). The CA issues an encrypted digital certificate containing the applicant's public key and a variety of other identification information. The CA makes its own public key readily available on the Internet. The recipient of an encrypted message uses the CA's public key to decode the digital certificate attached to the message, verifies it as issued by the CA and then obtains the sender's public key and identification information held within the certificate.
  • digital electronics — (electronics)   The implementation of two-valued logic using electronic logic gates such as and gates, or gates and flip-flops. In such circuits the logical values true and false are represented by two different voltages, e.g. 0V for false and +5V for true. Similarly, numbers are normally represented in binary using two different voltages to represented zero and one. Digital electronics contrasts with analogue electronics which represents continuously varying quantities like sound pressure using continuously varying voltages. Digital electronics is the foundation of modern computers and digital communications. Massively complex digital logic circuits with millions of gates can now be built onto a single integrated circuit such as a microprocessor and these circuits can perform millions of operations per second.
  • digital linear tape — (storage)   (DLT) A kind of magnetic tape drive originally developed by DEC and now marketed by Quantum. DLT drives implement the Digital Lempel Ziv 1 (DLZ1) compression algorithm in a combination of hardware and firmware. They use a popular chip by Stac (now hi/fn) to do the string searching. Counting, sorting and Huffman coding are done in firmware (with hardware support for the Huffman algorithm?). In April 1997 DLT drives can transfer 5 megabytes per second and can store 35 gigabytes on a single cartridge. Compression might roughly double these figures.
  • digital photography — the taking or manipulation of photographs that are stored as data files on a computer.
  • direct grant school — (in Britain, formerly) a school financed by endowment, fees, and a state grant conditional upon admittance of a percentage of nonpaying pupils nominated by the local education authority
  • disadvantageousness — The state or quality of being disadvantageous.
  • disambiguation page — a page on a website that lists various websites or web pages that have or could have the same title. The user is able to select from the list that page, site etc that he or she actually wants
  • displacement engine — any engine employing the rectilinear motion of one or more pistons in cylinders.
  • display advertising — display ads taken collectively.
  • distinguishableness — The state or quality of being distinguishable.
  • ditty bag (or box) — a small bag (or box) used as by sailors for holding sewing equipment, toilet articles, etc.
  • diversified farming — the practice of producing a variety of crops or animals, or both, on one farm, as distinguished from specializing in a single commodity.
  • dominant wavelength — the wavelength of monochromatic light that would give the same visual sensation if combined in a suitable proportion with an achromatic light
  • don the baggy green — to represent Australia at Test cricket
  • don't make me laugh — Some people reply to other people's comments or opinions by saying 'Don't make me laugh' when they disagree with them and think they are foolish or inaccurate.
  • double-helical gear — herringbone gear.
  • drawing-room comedy — a light, sophisticated comedy typically set in a drawing room with characters drawn from polite society.
  • dry-bulk cargo ship — a ship that carries an unpackaged dry cargo such as coal or grain; bulk carrier
  • duplicating machine — a duplicator, especially one for making identical copies of documents, letters, etc.
  • dynamic positioning — Dynamic positioning is the use of computers to control the position of a semi-submersible rig.
  • earthquake coverage — Earthquake coverage is insurance coverage for damage caused by earthquakes.
  • earthquake engineer — a civil engineer who studies the effects of seismic activity on structures and consults on earthquake-resistant design and construction.
  • echoencephalography — a device that employs reflected ultrasonic waves to examine the position of brain structures.
  • economic management — the management of the resources, finances, income, and expenditure of a community, business enterprise, etc
  • electrical engineer — An electrical engineer is a person who uses scientific knowledge to design, construct, and maintain electrical devices.
  • electrocardiographs — Plural form of electrocardiograph.
  • electrocardiography — The measurement of electrical activity in the heart and the recording of such activity as a visual trace (on paper or on an oscilloscope screen), using electrodes placed on the skin of the limbs and chest.
  • electromagnetically — By means of electromagnetism.
  • electron micrograph — a photograph or image of a specimen taken using an electron microscope
  • electronegativities — Plural form of electronegativity.
  • electronic graphics — (on television) the production of graphic designs and text by electronic means
  • electronic magazine — (messaging, publication, web)   (e-zine) A regular publication on some particular topic distributed in digital form, chiefly now via the web but also by electronic mail or floppy disk. E-zines are often distributed for free by enthusiasts.
  • electropalatography — the study of the movements of the tongue during speech using touch-sensitive electrodes in the mouth linked to a computer
  • electrophotographic — Of or pertaining to electrophotography.
  • enabling technology — technology that enables the user to perform a task or to improve his or her overall performance: e.g. the internet
  • energy conservation — concerted formal or government action or policy to make sure that energy is not wasted
  • engineering factory — a factory where engineering products are made
  • english toy spaniel — breed of dog
  • entitlement program — a government program providing defined sectors of the population with social benefits
  • equatorial mounting — an astronomical telescope mounting that allows motion of the telescope about two mutually perpendicular axes, one of which is parallel to the earth's axis
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