19-letter words containing n, e, d, l, r
- 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.
- dimethylnitrosamine — a yellow, water-soluble carcinogenic liquid, C 2 H 6 N 2 O, found in tobacco smoke and certain foods: known to be a potent carcinogen. Abbreviation: DMN, DMNA.
- 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
- directional coupler — (communications) (tap) A passive device used in cable systems to divide and combine radio frequency signals. A directional coupler has at least three ports: line in, line out, and the tap. The signal passes between line in and line out ports with loss referred to as the insertion loss. A small portion of the signal power applied to the line in port passes to the tap port. A signal applied to the tap port is passed to the line in port less the tap attenuation value. The tap signals are isolated from the line out port to prevent reflections. A signal applied to the line out port passes to the line in port and is isolated from the tap port. Some devices provide more than one tap output line (multi-taps).
- dispersion relation — the relationship between the angular frequency (ω;) of a wave and the magnitude of its wave vector (k). Thus the wave's speed is ω/k
- display advertising — display ads taken collectively.
- diversional therapy — the structured use of leisure time in recreation and play as a form of or supplement to conventional therapy
- do well for oneself — to thrive or succeed
- double counterpoint — invertible counterpoint using two transposable voices.
- draw the color line — to impose or accept the color line
- drink the health of — to salute or celebrate with a toast
- educational adviser — a person who provides advice and training to teachers about teaching methods and educational policies
- elastic deformation — In elastic deformation a material changes shape when a stress is applied to it but goes back to its original state when the stress is removed.
- electroconductivity — Electrical conductivity.
- electrode potential — the potential difference developed when an electrode of an element is placed in a solution containing ions of that element
- electrodynamometers — Plural form of electrodynamometer.
- electrohydrodynamic — (physics) Of or pertaining to electrohydrodynamics.
- electronic keyboard — a typewriter keyboard used to operate an electronic device such as a computer, word processor, etc
- environmental audit — the systematic examination of an organization's interaction with the environment, to assess the success of its conservation or antipollution programme
- euclidean algorithm — Euclid's Algorithm
- extendible compiler — (language) (ETC) A Fortran-like compiler that can be extended with macros.
- first-sale doctrine — a legal principle allowing the purchaser of a lawfully made copy of a copyright-protected work to sell or give away that copy without permission but not to reproduce it.
- florida velvet bean — a tropical vine, Mucuna deeringiana, of the legume family, having showy, purple flowers in drooping clusters and black, hairy pods: grown as an ornamental.
- free alongside quay — (of a shipment of goods) delivered to the quay without charge to the buyer
- free alongside ship — (of a shipment of goods) delivered to the dock without charge to the buyer, but excluding the cost of loading onto the vessel
- frill-necked lizard — a large arboreal insectivorous Australian lizard, Chlamydosaurus kingi, having an erectile fold of skin around the neck: family Agamidae (agamas)
- galactic coordinate — Usually, galactic coordinates. a member of a system of coordinates that define the position of a celestial body with reference to the Milky Way.
- gentile da fabriano — 1370?–1427, Italian painter.
- geothermal gradient — the increase in temperature with increasing depth within the earth.
- geraldton waxflower — an evergreen shrub, Chamelaucium uncinatum, native to W Australia, cultivated for its pale pink flowers
- germander speedwell — a speedwell, Veronica chamaedrys, having blue flowers.
- giraldus cambrensis — literary name of Gerald de Barri. ?1146–?1223, Welsh chronicler and churchman, noted for his accounts of his travels in Ireland and Wales
- go round in circles — to engage in energetic but fruitless activity
- godfrey of bouillon — (Duke of Lower Lorraine) 1060?–1100, French leader of the First Crusade 1096–99.
- goldbach conjecture — an unproved theorem that every even integer greater than 2 can be written as the sum of two prime numbers.
- golden lion tamarin — a monkey, Leontopithecus rosalia rosalia, of tropical rain forests of southeastern Brazil, having a silky golden coat and a long golden mane: threatened with extinction.
- grand duke nicholas — of Cusa [kyoo-zuh] /ˈkyu zə/ (Show IPA), 1401–1464, German cardinal, mathematician, and philosopher. German Nikolaus von Cusa.
- grandfather's clock — a pendulum floor clock having a case as tall as or taller than a person; tall-case clock; long-case clock.
- grandmother's clock — a pendulum clock similar to a grandfather's clock but shorter.
- gravitational field — the attractive effect, considered as extending throughout space, of matter on other matter.
- great-grandchildren — a grandchild of one's son or daughter.
- ground-plane aerial — a quarter-wave vertical dipole aerial in which the electrical image forming the other quarter-wave section is formed by reflection in a system of radially disposed metal rods or in a conductive sheet
- halt and catch fire — (humour, processor) (HCF) Any of several undocumented and semi-mythical machine instructions with destructive side-effects, supposedly included for test purposes on several well-known architectures going as far back as the IBM 360. The Motorola 6800 microprocessor was the first for which an HCF opcode became widely known. This instruction caused the processor to read every memory location sequentially until reset.
- handlebar moustache — a man's moustache having long, curved ends that resemble the handlebars of a bicycle.
- heel-and-toe racing — race walking.
- highland clearances — in Scotland, the removal, often by force, of the people from some parts of the Highlands to make way for sheep, during the eighteenth and nineteenth centuries
- hildegard of bingen — Hildegard von (Hildegard of Bingen"Sibyl of the Rhine") 1098–1178, German nun, healer, writer, and composer.
- hold no terrors for — If something holds no terrors for you, you are not at all frightened or worried by it.
- honorable discharge — a discharge from military service of a person who has fulfilled obligations efficiently, honorably, and faithfully.