20-letter words containing a, c, e, r
- directory assistance — a telephone company service that furnishes telephone directory information over the telephone.
- directory user agent — (DUA) The software that accesses the X.500 Directory Service on behalf of the directory user. The directory user may be a person or another software element.
- disability insurance — insurance providing income to a policyholder who is disabled and cannot work.
- disciplinary hearing — a hearing at which the conduct of a member of an organization, profession etc is examined and a punishment may be handed down
- discretionary income — money for luxuries
- displacement current — the rate of change, at any point in space, of electric displacement with time.
- disruptive discharge — the sudden, large increase in current through an insulating medium resulting from complete failure of the medium under electrostatic stress.
- distress merchandise — goods sold below the prevailing price in order to raise cash quickly or to meet some other financial emergency.
- distributed practice — learning with reasonably long intervals between separate occasions of learning
- distribution channel — trade: retailer
- distributive lattice — (theory) A lattice for which the least upper bound (lub) and greatest lower bound (glb) operators distribute over one another so that a lub (b glb c) == (a lub c) glb (a lub b) and vice versa. ("lub" and "glb" are written in LateX as \sqcup and \sqcap).
- diverticular disease — any disease of the colon involving the presence of diverticula
- do someone a service — If you do someone a service, you do something that helps or benefits them.
- documentary evidence — law: written
- double-aspect theory — a monistic theory that holds that mind and body are not distinct substances but merely different aspects of a single substance
- double-trailer truck — tandem trailer (def 1).
- draw close/draw near — If an event or period of time is drawing closer or is drawing nearer, it is approaching.
- drum and bugle corps — a marching band of drum players and buglers.
- duck-billed dinosaur — hadrosaur.
- due process (of law) — the course of legal proceedings established by the legal system of a nation or state to protect individual rights
- ecclesiastical court — a church court in ecclesiastical matters, presided over by members of the clergy and usually having no compulsory jurisdiction.
- ecological footprint — a mark left by the shod or unshod foot, as in earth or sand.
- economic rationalism — an economic policy based on the efficiency of market forces, characterized by minimal government intervention, tax cuts, privatization, and deregulation of labour markets
- ecumenical patriarch — the patriarch of Constantinople, regarded as the highest dignitary of the Greek Orthodox Church.
- education department — the department of a local authority that is concerned with education, or the government department concerned with education
- edward the confessor — Saint, 1002?–66, English king 1042–66: founder of Westminster Abbey.
- effective resistance — the resistance to an alternating current, expressed as the ratio of the power dissipated to the square of the effective current.
- efficiency apartment — a small apartment consisting typically of a combined living room and bedroom area, a bathroom, and a kitchenette.
- electoral boundaries — the way that a country or area is divided for the purposes of voting in an election
- electrocardiographic — Of or pertaining to an electrocardiogram (ECG) or electrocardiograph.
- electroencephalogram — A test or record of brain activity produced by electroencephalography.
- electrohydrodynamics — (physics) the study of the dynamics of electrically conducting fluid.
- electromagnetic pump — a device for pumping liquid metals by placing a pipe between the poles of an electromagnet and passing a current through the liquid metal
- electromagnetic unit — any unit that belongs to a system of electrical cgs units in which the magnetic constant is given the value of unity and is taken as a pure number
- electromagnetic wave — a wave of energy propagated in an electromagnetic field
- electronic signature — electronic proof of a person's identity
- electrophysiological — Of or pertaining to electrophysiology.
- electroshock therapy — a form of shock therapy in which electric current is applied to the brain
- elementary education — the first six to eight years of a child's education
- embryo vitrification — a method of in vitro fertilization in which the embryo is exposed to a vitreous solution and frozen before being thawed and implanted into the uterus
- entertainment center — stereo: hifi
- entrance examination — admission test
- entry qualifications — the qualifications people wishing to enter an organization, university, etc, have to have
- environmental impact — the impact on the environment created by an industry, service, plan, or project
- equilibrium constant — The equilibrium constant is the ratio between the amount of reactants and the amount of product for a particular chemical reaction, used to calculate chemical behavior.
- equivalence relation — (mathematics) A relation R on a set including elements a, b, c, which is reflexive (a R a), symmetric (a R b => b R a) and transitive (a R b R c => a R c). An equivalence relation defines an equivalence class. See also partial equivalence relation.
- erythema infectiosum — a mild infectious disease of childhood, caused by a virus, characterized by fever and a red rash spreading from the cheeks to the limbs and trunk
- european social fund — one of the four Structural Funds of the European Union which aims to support employment and the economic and social well-being of EU member countries
- exercise, left as an — Used to complete a proof in technical books when one doesn't mind a handwave, or to avoid one entirely. The complete phrase is: "The proof [or "the rest"] is left as an exercise for the reader." This comment *has* occasionally been attached to unsolved research problems by authors possessed of either an evil sense of humour or a vast faith in the capabilities of their audiences.
- explicit parallelism — A feature of a programming language for a parallel processing system which allows or forces the programmer to annotate his program to indicate which parts should be executed as independent parallel tasks. This is obviously more work for the programmer than a system with implicit parallelism (where the system decides automatically which parts to run in parallel) but may allow higher performance.