19-letter words containing a, n, t, o
- 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
- distillation column — a type of still fitted with interior baffles, used for fractional distillation. Compare still2 (def 1).
- diversional therapy — the structured use of leisure time in recreation and play as a form of or supplement to conventional therapy
- dobsonian telescope — a relatively inexpensive Newtonian telescope, suitable for visual but not photographic use, in which the tube assembly slips freely in the lower base.
- domain architecture — (systems analysis) A generic, organisational structure or design for software systems in a domain. The domain architecture contains the designs that are intended to satisfy requirements specified in the domain model. A domain architecture can be adapted to create designs for software systems within a domain and also provides a framework for configuring assets within individual software systems.
- 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 do that then! — (humour) (From an old doctor's office joke about a patient with a trivial complaint) A stock response to a user complaint. "When I type control-S, the whole system comes to a halt for thirty seconds." "Well don't do that then!"
- 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.
- draw the color line — to impose or accept the color line
- draw the curtain on — to end
- drink the health of — to salute or celebrate with a toast
- dynamic positioning — Dynamic positioning is the use of computers to control the position of a semi-submersible rig.
- dynamic translation — (architecture) A virtual machine implementation approach, used to speed up execution of byte-code programs. To execute a program unit such as a method or a function, the virtual machine compiles its bytecodes into (hardware) machine code. The translated code is also placed in a cache, so that next time that unit's machine code can be executed immediately, without repeating the translation. This technique was pioneered by the commercial Smalltalk implementation currently known as VisualWorks, in the early 1980s. Currently it is also used by some implementations of the Java Virtual Machine under the name JIT (Just In Time compilation).
- dynatron oscillator — type of oscillator
- east dunbartonshire — a council area of central Scotland to the N of Glasgow: part of Strathclyde region from 1975 until 1996: mainly agricultural and residential. Administrative centre: Kirkintilloch. Pop: 106 970 (2003 est). Area: 172 sq km (66 sq miles)
- east-west relations — relations between the United States and its allies in the western alliance and the Soviet Union, it allies and other Communist countries, especially during the period between the end of World War II and the fall of the Soviet regime
- eastern coral snake — any of numerous venomous elapid snakes, found chiefly in the New World tropics, as Micrurus fulvius (eastern coral snake) of the southeastern U.S., often brilliantly marked with bands of red, yellow, and black.
- eat one's heart out — Anatomy. a hollow, pumplike organ of blood circulation, composed mainly of rhythmically contractile smooth muscle, located in the chest between the lungs and slightly to the left and consisting of four chambers: a right atrium that receives blood returning from the body via the superior and inferior vena cavae, a right ventricle that pumps the blood through the pulmonary artery to the lungs for oxygenation, a left atrium that receives the oxygenated blood via the pulmonary veins and passes it through the mitral valve, and a left ventricle that pumps the oxygenated blood, via the aorta, throughout the body.
- eat someone's lunch — to take into the mouth and swallow for nourishment; chew and swallow (food).
- economic management — the management of the resources, finances, income, and expenditure of a community, business enterprise, etc
- ecumenical movement — See under ecumenical (def 4).
- education committee — a committee that discusses the education of children in a particular local authority
- educational adviser — a person who provides advice and training to teachers about teaching methods and educational policies
- eilean donan castle — a castle near the Kyle of Lochalsh in Highland, Scotland: built in the 13th century; famous for its picturesque setting
- 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.
- electro-shock baton — a baton used as a weapon to pass an electric current through part of the body
- 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.
- electromagnetically — By means of electromagnetism.
- electromechanically — In an electromechanical way.
- 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 keyboard — a typewriter keyboard used to operate an electronic device such as a computer, word processor, etc
- 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.
- electrostatic units — the system of CGS electric and magnetic units that assigns the value of one to the dielectric constant of a vacuum
- elevator controller — An archetypal dumb embedded-systems application, like toaster (which superseded it). During one period (1983--84) in the deliberations of ANSI X3J11 (the C standardisation committee) this was the canonical example of a really stupid, memory-limited computation environment. "You can't require "printf(3)" to be part of the default run-time library - what if you're targeting an elevator controller?" Elevator controllers became important rhetorical weapons on both sides of several holy wars.
- emotional blackmail — a way of persuading someone to do something they do not want to do by making them feel guilty about it
- employment tribunal — (in England, Scotland, and Wales) a tribunal that rules on disputes between employers and employees regarding unfair dismissal, redundancy, etc
- enabling technology — technology that enables the user to perform a task or to improve his or her overall performance: e.g. the internet
- end of transmission — (character) (EOT) The mnemonic for ASCII character 4.
- endowment assurance — a form of life insurance that provides for the payment of a specified sum directly to the policyholder at a designated date or to his beneficiary should he die before this date
- endowment insurance — Endowment insurance is a type of life insurance that pays a particular sum directly to the policyholder at a stated date, or to a beneficiary if the policyholder dies before this date.
- 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
- entry qualification — the qualifications and conditions required to join an organization, club, etc