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22-letter words containing a, e, r, i

  • concentration gradient — the gradual difference in concentration of a dissolved substance in a solution between a region of high density and one of lower density.
  • congressional district — (in the US) an electoral division of a state, entitled to send one member to the US House of Representatives
  • conservation of charge — the principle that the total charge of any isolated system is constant and independent of changes that take place within the system
  • conservation of energy — the principle that the total energy of any isolated system is constant and independent of any changes occurring within the system
  • conservation of matter — the principle that matter is neither created nor destroyed during any physical or chemical change
  • conservation of parity — the principle that the parity of the total wave function describing a system of elementary particles is conserved. In fact it is not conserved in weak interactions
  • conservative extension — a formal theory that includes among its theorems all the theorems of a given theory
  • constructive dismissal — If an employee claims constructive dismissal, they begin a legal action against their employer in which they claim that they were forced to leave their job because of the behaviour of their employer.
  • consummatory behaviour — any behaviour that leads directly to the satisfaction of an innate drive, e.g. eating or drinking
  • contextual advertising — a form of targeted advertising used on websites or other media, such as content displayed in mobile browsers
  • contingent beneficiary — a person who becomes the beneficiary if the primary beneficiary dies or is otherwise disqualified.
  • continuous welded rail — a long, continuous rail formed by welding many short rails.
  • contradiction in terms — a term, phrase, or phenomenon containing self-contradictory parts
  • conversational quality — (in public speaking) a manner of utterance that resembles the spontaneity and informality of relaxed personal conversation.
  • convertible loan stock — a stock or bond that can be converted into a stated number of shares at a particular date
  • coronary heart disease — any heart disorder caused by disease of the coronary arteries
  • coronary insufficiency — inadequate circulation of blood through the coronary arteries, characterized by attacks of angina pectoris
  • corrupt practices acts — laws limiting contributions to and expenditures in election campaigns, making illegal certain methods of influencing voters, etc.
  • cosmological principle — the theory that the universe is uniform, homogenous, and isotropic, and therefore appears the same from any position
  • cotton-wool generation — the children and teenagers of the early 21st century, viewed as having been overprotected while growing up
  • counterinterpretations — Plural form of counterinterpretation.
  • counterrevolutionaries — Plural form of counterrevolutionary.
  • crankshaft end bearing — The crankshaft end bearing is the bearing between the connecting rod and the crankshaft of an internal combustion engine.
  • crime against humanity — repeated actions undertaken by, or condoned by, a government, deemed to infringe human dignity and safety, such as rape, torture, murder, etc
  • criminal investigation — an investigation by the police into a crime
  • cross the great divide — to die
  • curly-coated retriever — a strongly built variety of retriever with a tightly curled black or liver-coloured coat
  • curvature of the spine — a condition in which the spine is abnormally curved
  • cycle of reincarnation — A term coined by Ivan Sutherland ca. 1970 to refer to a well-known effect whereby function in a computing system family is migrated out to special-purpose peripheral hardware for speed, then the peripheral evolves toward more computing power as it does its job, then somebody notices that it is inefficient to support two asymmetrical processors in the architecture and folds the function back into the main CPU, at which point the cycle begins again. Several iterations of this cycle have been observed in graphics-processor (blitter) design, and at least one or two in communications and floating-point processors. Also known as "the Wheel of Life", "the Wheel of Samsara" and other variations of the basic Hindu/Buddhist theological idea.
  • cyclic redundancy code — cyclic redundancy check
  • cylindrical coordinate — Usually, cylindrical coordinates. a member of a system of coordinates for locating a point in space by its polar coordinates and its perpendicular distance to the polar plane.
  • 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
  • dadra and nagar haveli — a union territory of W India, on the Gulf of Cambay: until 1961 administratively part of Portuguese Damão. Capital: Silvassa. Pop: 220 451 (2001). Area: 489 sq km (191 sq miles)
  • 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
  • damn with faint praise — If someone damns something with faint praise, they say something about it which sounds quite nice but is not enthusiastic, and shows that they do not have a high opinion of it.
  • dandie dinmont terrier — any of a breed of small terrier with short legs, drooping ears, and a generally rough coat with a mass of silky hair on top of the head
  • dashing white sergeant — a lively Scottish dance for sets of six people
  • database administrator — (job)   A person responsible for the design and management of one or more databases and for the evaluation, selection and implementation of database management systems. In smaller organisations, the data administrator and database administrator are often one in the same; however, when they are different, the database administrator's function is more technical. The database administrator would implement the database software that meets the requirements outlined by the organisation's data administrator and systems analysts. Tasks might include controling an organisation's data resources, using data dictionary software to ensure data integrity and security, recovering corrupted data and eliminating data redundancy and uses tuning tools to improve database performance.
  • 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.
  • days of wine and roses — a period of happiness and prosperity.
  • de broglie wave length — 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.
  • decompartmentalization — the act of decompartmentalizing
  • dehydroepiandrosterone — the most abundant steroid in the human body, that is involved in the manufacture of testosterone, oestrogen, progesterone, and corticosterone
  • delaunay triangulation — (mathematics, graphics)   (After B. Delaunay) For a set S of points in the Euclidean plane, the unique triangulation DT(S) of S such that no point in S is inside the circumcircle of any triangle in DT(S). DT(S) is the dual of the voronoi diagram of S.
  • delayed-action shutter — a camera shutter that opens after an interval set by the photographer
  • descriptive cataloging — the aspect of cataloging concerned with the bibliographic and physical description of a book, recording, or other work, accounting for such items as author or performer, title, edition, and imprint as opposed to subject content.
  • descriptive statistics — the use of statistics to describe a set of known data in a clear and concise manner, as in terms of its mean and variance, or diagrammatically, as by a histogram
  • 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
  • devil's darning needle — dragonfly
  • dicyclopentadienyliron — ferrocene (def 1).
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