19-letter words containing a, g, c
- 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.
- 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.
- digital certificate — (communications, security) An attachment to an electronic mail message used for security purposes, e.g. to verify that a user sending a message is who he or she claims to be, and to provide the receiver with the means to encode a reply. An individual wishing to send an encrypted message applies for a digital certificate from a certificate authority (CA). The CA issues an encrypted digital certificate containing the applicant's public key and a variety of other identification information. The CA makes its own public key readily available on the Internet. The recipient of an encrypted message uses the CA's public key to decode the digital certificate attached to the message, verifies it as issued by the CA and then obtains the sender's public key and identification information held within the certificate.
- 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.
- 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
- displacement engine — any engine employing the rectilinear motion of one or more pistons in cylinders.
- 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
- duplicating machine — a duplicator, especially one for making identical copies of documents, letters, etc.
- 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
- electrical engineer — An electrical engineer is a person who uses scientific knowledge to design, construct, and maintain electrical devices.
- 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
- 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
- evaporative cooling — a method of reducing temperature that uses evaporation
- executive agreement — an agreement made between the US President and the head of a foreign state, having the effect of a treaty
- 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
- fixed exchange rate — finance: set rate of exchange
- fixed-wing aircraft — a heavier-than-air aircraft capable of flight whose lift is generated not by wing motion relative to the aircraft, but by forward motion through the air
- flag of convenience — the foreign flag under which merchant ships register in order to save on taxes or wages, or to avoid government regulations.
- fortification agate — an agate, used as a gem, having polygonal banding such that it suggests the plan of a bastion.
- frederick the great — Frederick I (def 2).
- from rags to riches — a worthless piece of cloth, especially one that is torn or worn.
- front-end financing — money or costs required or incurred in advance of a project in order to get it under way
- functional language — (language) A language that supports and encourages functional programming.
- gaius julius caesar — Gaius [gey-uh s] /ˈgeɪ əs/ (Show IPA), (or Caius) [key-uh s] /ˈkeɪ əs/ (Show IPA), Julius, c100–44 b.c, Roman general, statesman, and historian.
- 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.
- gas central heating — a system of central heating fuelled by combustible gas
- gastrocolic omentum — the peritoneal fold attached to the stomach and the colon and hanging over the small intestine.
- gastroenterocolitis — (medicine) inflammation of the stomach, small intestines, and colon.
- gastroenterological — Of or pertaining to gastroenterology.
- general anaesthetic — sth administered to induce unconsciousness
- general linguistics — the study of the characteristics of language in general rather than of a particular language; theoretical, rather than applied, linguistics.