19-letter words containing a, d
- data driven machine — (language) (DDM) A dataflow language.
- data encryption key — (DEK) Used for the encryption of message text and for the computation of message integrity checks (signatures). See cryptography.
- 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.
- data protection act — (legal) (DPA) A UK law guaranteeing rights to individuals in relation to personal data that others hold on them. For example, under the DPA, you have the right to see what data a company holds on you.
- data terminal ready — (communications) (DTR) The wire in a full RS-232 connection that tells the Data Communication Equipment (DCE, typically a modem) that the Data Terminal Equipment (DTE, typically a computer or terminal) is ready to transmit and receive data.
- database management — the maintenance of information stored in a computer system
- datatron 200 series — (computer) A family of computers produced by Burroughs that included the Datatron 204 and Datatron 220.
- davy jones's locker — the bottom of the sea; grave of those drowned at sea or buried there
- 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.
- de-compartmentalize — to divide into categories or compartments.
- de-internationalize — to make international, as in scope or character: a local conflict that was internationalized into a major war.
- de-militarised zone — (networking) (DMZ) (From the military term for an area between two opponents where fighting is prevented) DMZ Ethernets connect networks and computers controlled by different bodies. They may be external or internal. External DMZ Ethernets link regional networks with routers to internal networks. Internal DMZ Ethernets link local nodes with routers to the regional networks. Compare red zone.
- deacetyltransferase — (enzyme) Any of a class of enzymes that remove acetyl groups, especially from a lysine residue of a histone.
- deaf without speech — (usually of a prelingually deaf person) able to utter sounds but not speak
- death of a salesman — a play (1949) by Arthur Miller.
- deathbed confession — a confession that somebody makes just before he or she dies, usually relating to some long concealed crime or secret
- declaration of love — a statement made by one person to another in which they say they are in love with the other person
- declare an interest — to make known one's connection, esp a prejudicial connection, with an affair
- decontextualization — to remove (a linguistic element, an action, etc.) from a context: decontextualized works of art displayed in museums.
- deflate compression — deflate
- deflationary spiral — Geometry. a plane curve generated by a point moving around a fixed point while constantly receding from or approaching it.
- deindustrialisation — Alternative spelling of deindustrialization.
- deindustrialization — the decline in importance of manufacturing industry in the economy of a nation or area
- deinstitutionalized — Simple past tense and past participle of deinstitutionalize.
- demonstration model — a nearly new product, such as a car or washing machine, that has been used only to demonstrate its performance by a dealer and is offered for sale at a discount
- dendrochronological — Pertaining to dendrochronology.
- dental receptionist — a receptionist working in a dental surgery
- department chairman — the chairman of a university department
- department of labor — the department of the U.S. federal government that promotes and improves the welfare, opportunities, and working conditions of wage earners. Abbreviation: DOL.
- department of state — the department of the U.S. federal government that sets forth and maintains the foreign policy of the U.S., especially in negotiations with foreign governments and international organizations. Abbreviation: DOS.
- departmentalisation — Alternative spelling of departmentalization.
- departmentalization — to divide into departments.
- dependable software — software reliability
- depletion allowance — a tax allowance granted in certain industries, such as the oil and gas industries, to compensate for the depletion of the oil, gas, etc owned by the company
- 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.
- detective constable — a police officer who investigates crime and who is of the lowest rank
- developable surface — a surface that can be flattened onto a plane without stretching or compressing any part of it, as a circular cone.
- development company — a company that buys land and builds houses, offices, shops, or factories on it, or buys existing buildings and makes them more modern
- devil's coach-horse — a large black rove beetle, Ocypus olens, with large jaws and ferocious habits
- devils-on-horseback — a savoury of prunes wrapped in bacon slices and served on toast
- diamond anniversary — a 60th, or occasionally 75th, anniversary
- 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.
- diamond-leaf laurel — a tree, Pittosporum rhombifolium, of Australia, having coarsely toothed, oval or diamond-shaped leaves and white flowers, widely planted as an ornamental in the southwestern U.S.
- diamond-point spoon — a spoon having a handle terminating in a polygonal, pointed knob.
- dictionary of names — a dictionary of given names that indicates whether a name is usually male, female, or unisex and often includes origins as well as meanings; for example, as by indicating that Evangeline, meaning “good news,” comes from Greek. Used primarily as an aid in selecting a name for a baby, dictionaries of names may also include lists of famous people who have shared a name and information about its current popularity ranking.
- dielectric constant — Electricity. the ratio of the flux density produced by an electric field in a given dielectric to the flux density produced by that field in a vacuum.
- diethylaminoethanol — a colorless, hygroscopic, water-soluble liquid, C 6 H 15 NO, used for the synthesis of local anesthetics, in antirust compounds, and in photographic emulsions.
- difference equation — (mathematics) A relation between consecutive elements of a sequence. The first difference is D u(n) = u(n+1) - u(n) where u(n) is the nth element of sequence u. The second difference is u(n+2) + a u(n+1) + b u(n) = 0 can be converted to a difference equation (in this case, a second order linear difference equation): D2 u(n) + p D u(n) + q u(n) = 0 and vice versa. a, b, p, q are constants.