22-letter words containing a, l, m, t, e, r
- d'alembert's principle — the principle that for a moving body the external forces are in equilibrium with the inertial forces; a generalization of Newton's third law of motion
- dalton's atomic theory — the theory that matter consists of indivisible particles called atoms and that atoms of a given element are all identical and can neither be created nor destroyed. Compounds are formed by combination of atoms in simple ratios to give compound atoms (molecules). The theory was the basis of modern chemistry
- database normalisation — (database) A series of steps followed to obtain a database design that allows for efficient access and storage of data in a relational database. These steps reduce data redundancy and the chances of data becoming inconsistent. A table in a relational database is said to be in normal form if it satisfies certain constraints. Codd's original work defined three such forms but there are now five generally accepted steps of normalisation. The output of the first step is called First Normal Form (1NF), the output of the second step is Second Normal Form (2NF), etc. First Normal Form eliminates repeating groups by putting each value of a multi-valued attribute into a new row. Second Normal Form eliminates functional dependencies on a partial key by putting the fields in a separate table from those that are dependent on the whole key. Third Normal Form eliminates functional dependencies on non-key fields by putting them in a separate table. At this stage, all non-key fields are dependent on the key, the whole key and nothing but the key. Fourth Normal Form separates independent multi-valued facts stored in one table into separate tables. Fifth Normal Form breaks out data redundancy that is not covered by any of the previous normal forms.
- decompartmentalization — the act of decompartmentalizing
- developmental disorder — any condition, such as autism or dyslexia, that appears in childhood and is characterized by delay in the development of one or more psychological functions, such as language skill
- digital control system — (systems) (DCS) A digital computer used for real-time control of a dynamic system, usually in an industrial environment, possibly as part of a Supervisory Control and Data Acquisition (SCADA) system. A DCS samples feedback from the system under control and modifies the control signals in an attempt to achieve some desired behaviour. Analysis of such digital-analogue feedback systems can involve mathematical methods such as difference equations, Laplace transforms, z transfer functions, state space models and state transition matrices.
- digital radio mondiale — (communications) (DRM) A form of monaural digital broadcast using carrier frequencies below 30 MHz. DRM uses MPEG-4 AAC Main Profile and SBR at data rates of 16-25 kbps.
- directional microphone — a microphone that has a greater sensitivity to sounds coming from a particular area in front of it: used to eliminate unwanted sounds.
- disciplinary committee — a committee charged with examining alleged breaches of discipline within an organization, profession, etc and adjudicating on them
- disposable soma theory — the theory that ageing is caused by the body having increasingly fewer resources to allocate towards repairing wear and damage to tissues
- drumhead court-martial — a court-martial held, usually on a battlefield, for the summary trial of charges of offenses committed during military operations.
- electromagnetic moment — a measure of the magnetic strength of a magnet or current-carrying coil, expressed as the torque produced when the magnet or coil is set with its axis perpendicular to unit magnetic flux density. It is measured in ampere metres squared
- electronic mail client — mail user agent
- electrothermal printer — a printer that produces characters by burning the image on specially coated paper
- employers' association — a body of employers, usually from the same sector of the economy, associated to further the interests of member companies by conducting negotiations with trade unions, providing advice, making representations to other bodies, etc
- end transmission block — (character) (ETB) The mnemonic for ASCII character 23.
- equal rights amendment — a proposed amendment to the US Constitution enshrining equality between the sexes
- evolutionary algorithm — (EA) An algorithm which incorporates aspects of natural selection or survival of the fittest. An evolutionary algorithm maintains a population of structures (usually randomly generated initially), that evolves according to rules of selection, recombination, mutation and survival, referred to as genetic operators. A shared "environment" determines the fitness or performance of each individual in the population. The fittest individuals are more likely to be selected for reproduction (retention or duplication), while recombination and mutation modify those individuals, yielding potentially superior ones. EAs are one kind of evolutionary computation and differ from genetic algorithms. A GA generates each individual from some encoded form known as a "chromosome" and it is these which are combined or mutated to breed new individuals. EAs are useful for optimisation when other techniques such as gradient descent or direct, analytical discovery are not possible. Combinatoric and real-valued function optimisation in which the optimisation surface or fitness landscape is "rugged", possessing many locally optimal solutions, are well suited for evolutionary algorithms.
- examining the entrails — The process of grovelling through a core dump or hex image in an attempt to discover the bug that brought a program or system down. The reference is to divination from the entrails of a sacrified animal. Compare runes, incantation, black art, desk check.
- experimental condition — one of the distinct states of affairs or values of the independent variable for which the dependent variable is measured in order to carry out statistical tests or calculations
- extra-mural department — a university department that offers courses for part-time students
- facsimile transmission — an international system of transmitting a written, printed, or pictorial document over the telephone system by scanning it photoelectrically and reproducing the image after transmission
- fall prey to something — To fall prey to something bad means to be taken over or affected by it.
- federal maritime board — the body responsible for regulating commerce by US and international shipping in US waters
- federal reserve system — a U.S. federal banking system that is under the control of a central board of governors (Federal Reserve Board) with a central bank (Federal Reserve Bank) in each of 12 districts and that has wide powers in controlling credit and the flow of money as well as in performing other functions, as regulating and supervising its member banks.
- fetal alcohol syndrome — a pattern of birth defects caused by maternal consumption of alcohol during pregnancy: considered as one of the fetal alcohol spectrum disorders. Abbreviation: FAS.
- flexible-rate mortgage — adjustable-rate mortgage.
- friar minor conventual — a friar belonging to a branch of the Franciscan order that separated from the Observants in the 15th century, and that observes a modification of the rule of St. Francis. Also called Conventual. Compare Friar Minor, capuchin (def 4).
- gallamine triethiodide — a neuromuscular blocking drug, C 30 H 60 I 3 N 3 O 3 , similar to curare, used as a skeletal muscle relaxant in conjunction with surgical anesthesia.
- give something a whirl — to attempt or give a trial to something
- go for all the marbles — to take a great risk in the hope of a great gain
- graeco-roman wrestling — a style of wrestling in which the legs may not be used to obtain a fall and no hold may be applied below the waist
- hammersmith and fulham — a borough of Greater London on the River Thames: established in 1965 by the amalgamation of Fulham and Hammersmith. Pop: 174 200 (2003 est). Area: 16 sq km (6 sq miles)
- hexamethylenetetramine — a white, crystalline, water-soluble powder, C 6 H 12 N 4 , used as a vulcanization accelerator, an absorbent in gas masks, in the manufacture of the explosive RDX and synthetic resins, and in medicine as a diuretic and urinary antiseptic.
- historical materialism — (in Marxist theory) the doctrine that all forms of social thought, as art or philosophy, and institutions, as the family or the state, develop as a superstructure founded on an economic base; that they reflect the character of economic relations and are altered or modified as a result of class struggles; that each ruling economic class produces the class that will destroy or replace it; and that dialectical necessity requires the eventual withering away of the state and the establishment of a classless society: the body of theory, in dialectical materialism, dealing with historical process and social causation.
- horn-rimmed spectacles — spectacles with rims made of material resembling horn
- in your wildest dreams — If you say that you could not imagine a particular thing in your wildest dreams, you are emphasizing that you think it is extremely strange or unlikely.
- incremental repetition — repetition, with variation, of a refrain or other part of a poem, especially a ballad.
- indeterminate cleavage — the division of an egg into cells, each of which has the potential of developing into a complete organism
- information technology — the development, implementation, and maintenance of computer hardware and software systems to organize and communicate information electronically. Abbreviation: IT.
- initial program loader — (operating system) (IPL) A bootstrap loader which loads the part of an operating system needed to load the remainder of the operating system.
- intermetallic compound — a compound of two or more metals.
- international air mile — a unit of distance at sea or in the air equal to 1.852 kilometers.
- international telegram — a telemessage sent from the UK to a foreign country
- ketamine hydrochloride — a powerful anesthetic, C13H16ClNO·HCl, used in surgery
- law enforcement agency — an organization responsible for enforcing the law, such as a police or sheriff department
- league of women voters — a nonpartisan organization that works toward improving the political process: created in 1920 to inform women on public issues. Abbreviation: LWV.
- liberal democrat party — The Liberal Democrat Party is the third largest political party in Britain and the main centre party. It believes in improving the constitution and the voting system and in providing good welfare services.
- linear induction motor — an electric motor in which a movable part moves in a straight line, with power being supplied by a varying magnetic field set up by a fixed part of the system, as a metal rail on the ground.
- lorentz transformation — the mathematical transformation in the special theory of relativity that describes the way in which measurements of space, time, and other physical quantities differ for two observers in uniform relative motion.