19-letter words containing a, g, o
- 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.
- 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 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 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
- ditty bag (or box) — a small bag (or box) used as by sailors for holding sewing equipment, toilet articles, etc.
- 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
- 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.
- 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
- 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
- error-based testing — (programming) Testing where information about programming style, error-prone language constructs, and other programming knowledge is applied to select test data capable of detecting faults, either a specified class of faults or all possible faults.
- essence of bergamot — a fragrant essential oil from the fruit rind of this plant, used in perfumery and some teas (including Earl Grey)
- euclidean algorithm — Euclid's Algorithm
- evaluation strategy — reduction strategy
- evaporative cooling — a method of reducing temperature that uses evaporation
- exophthalmic goiter — a disease of unknown cause characterized by enlargement of the thyroid gland, overproduction of the thyroid hormone, and abnormal protrusion of the eyeballs
- exophthalmic goitre — a form of hyperthyroidism characterized by enlargement of the thyroid gland, protrusion of the eyeballs, increased basal metabolic rate, and weight loss
- extreme programming — a discipline of software engineering following a specific structure, designed to simplify and speed up the development process
- feel strongly about — to have decided opinions concerning
- fix someone's wagon — any of various kinds of four-wheeled vehicles designed to be pulled or having its own motor and ranging from a child's toy to a commercial vehicle for the transport of heavy loads, delivery, etc.
- fixed-rate mortgage — a home mortgage for which equal monthly payments of interest and principal are paid over the life of the loan, usually for a term of 30 years.
- flag of convenience — the foreign flag under which merchant ships register in order to save on taxes or wages, or to avoid government regulations.
- flat-joint pointing — pointing having flush joints of common mortar.