21-letter words containing a, c, o, y
- cyclical unemployment — unemployment caused by fluctuations in the level of economic activity inherent in trade cycles
- cyclomatic complexity — (programming, testing) A measure of the number of linearly independent paths through a program module. Cyclomatic complexity is a measure for the complexity of code related to the number of ways there are to traverse a piece of code. This determines the minimum number of inputs you need to test all ways to execute the program.
- dacryocystorhinostomy — A surgical procedure to restore the flow of tears into the nose from the lacrimal sac when the nasolacrimal duct does not function.
- dendrochronologically — By the use of, or with reference to dendrochronology.
- deoxyribonucleic acid — DNA
- dictionary definition — the meaning of a word as given in a dictionary or dictionaries
- discretionary account — an account in which the stockbroker is allowed complete control over the purchase and sale of securities on the customer's behalf.
- draft once reuse many — (jargon) (DORUM) Reusing parts of a document to produce parts of an entirely new document. The term normally refers to text documents but the practise is equally common in programming.
- dynamic drive overlay — (storage, software) (DDO) Software to allow a system BIOS that does not support Logical Block Addressing to access drives larger than 528 MB. The alternatives are to update the system BIOS or install an EIDE controller card with a suitable on-board BIOS.
- educational sociology — the application of sociological principles and methods to the solution of problems in an educational system.
- electrochromatography — chromatography effected by the influence of an applied electric field
- electromyographically — By means of, or in terms of, electromyography.
- electronystagmography — A diagnostic test to record involuntary movements of the eye caused by a condition known as nystagmus. It can also be used to diagnose the cause of vertigo, dizziness or balance dysfunction by testing the vestibular system.
- empirical probability — a measure or estimate of the degree of confidence one may have in the occurrence of an event, defined as the proportion observed in a sample
- enhanced oil recovery — any of several techniques that make it possible to recover more oil than can be obtained by natural pressure, such as the injection of fluid or gases into an oilfield to force more oil to the surface
- european space agency — an organization dedicated to space exploration with 18 European countries as members
- every nook and cranny — If you talk about every nook and cranny of a place or situation, you mean every part or every aspect of it.
- faculty board meeting — a meeting of the governing body of a faculty
- food standards agency — the full form of FDA
- forensic anthropology — the branch of physical anthropology in which anthropological data, criteria, and techniques are used to determine the sex, age, genetic population, or parentage of skeletal or biological materials in questions of civil or criminal law.
- fort lesley j. mcnair — a military reservation in SW Washington, D.C., on the Potomac River, SW of the Capitol.
- forward compatibility — (jargon) The ability to accept input from later versions of itself. Forward compatibility is harder to achieve than backward compatibility, since, in the backward case, the input format is know whereas a forward compatible system needs to cope gracefully with unknown future features. An example of future compatibility is the stipulation that a web browser should ignore HTML tags it does not recognise. See also extensible.
- franco-belgian system — French system.
- functional dependency — (database) Given a relation R (in a relational database), attribute Y of R is functionally dependent on attribute X of R and X of R functionally determines Y of R (in symbols R.X -> R.Y) if and only if each X in R has associated with it precisely one Y in R (at any one time). Attributes X and Y may be composite. This is very close to a function in the mathematical sense.
- gas analysis recorder — A gas analysis recorder is a device which samples, records, and analyses gas.
- gestalt psychotherapy — a therapy devised in the US in the 1960s in which patients are encouraged to concentrate on the immediate present and to express their true feelings
- greenwich observatory — the national astronomical observatory of Great Britain, housed in a castle in E Sussex; formerly located at Greenwich.
- hawaiian honeycreeper — any small to medium-sized finches of the subfamily Drepanidinae, native to the Hawaiian Islands and including many rare and extinct species.
- hay-pauncefote treaty — an agreement (1901) between the U.S. and Great Britain giving the U.S. the sole right to build a canal across Central America connecting the Atlantic and Pacific.
- henry steele commager — Henry Steele, 1902–98, U.S. historian, author, and teacher.
- hexachlorocyclohexane — (chemistry) A six-chlorine substituted cyclohexane, a polyhalogenated compound used in pesticides.
- homogeneous catalysis — Homogeneous catalysis is catalysis in which the catalyst takes part in the reaction that it increases.
- host command facility — (operating system) (HCF) Used to access IBM S/36 and AS/400 computers from a mainframe.
- humanistic psychology — an approach to psychology that emphasizes emotions and the better understanding of the self in terms of observation of oneself and one's relations with others
- hydraulic accumulator — an apparatus in which gas, usually air, is used as a cushion or shock absorber in a hydraulic system.
- hyperbolic paraboloid — a paraboloid that can be put into a position such that its sections parallel to one coordinate plane are hyperbolas, with its sections parallel to the other two coordinate planes being parabolas.
- hypercholesterolaemia — the condition of having a high concentration of cholesterol in the blood
- ilya ilyich mechnikov — Élie [French ey-lee] /French eɪˈli/ (Show IPA), (Ilya Ilyich Mechnikov) 1845–1916, Russian zoologist and bacteriologist in France: Nobel Prize in medicine 1908.
- immunohistochemically — By means of or in regard to immunohistochemistry.
- imprecise probability — (probability) A probability that is represented as an interval (as opposed to a single number) included in [0,1].
- induced radioactivity — artificial radioactivity.
- industrial psychology — the application of psychological principles and techniques to business and industrial problems, as in the selection of personnel or development of training programs.
- infiltration capacity — the maximum rate at which a soil in a given condition will absorb water.
- insulin shock therapy — a former treatment for mental illness, especially schizophrenia, employing insulin-induced hypoglycemia as a method for producing convulsive seizures.
- intellectual property — Law. property that results from original creative thought, as patents, copyright material, and trademarks.
- intentional community — a community designed and planned around a social ideal or collective values and interests, often involving shared resources and responsibilities.
- intracoastal waterway — a mostly inland water route, partly natural and partly artificial, extending 1550 miles (2500 km) along the Atlantic coast from Boston to Florida Bay (Atlantic Intracoastal Waterway) and 1116 miles (1800 km) along the Gulf coast from Carrabelle, Fla., to Brownsville, Tex. (Gulf Intracoastal Waterway) constructed to protect small craft from the hazards of the open sea.
- isopropylideneacetone — mesityl oxide.
- jacques yves cousteau — Jacques Yves [zhahk eev] /ʒɑk iv/ (Show IPA), 1910–97, French naval officer, author, and underseas explorer: developed the Aqua-Lung.
- keyboard send receive — (hardware) (KSR) Part of a designation for a hard-copy terminal, manufactured by Teletype Corporation. The KSR range were lower cost versions of the ASR models.