linkage
American Heritage Dictionary:
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link·age
(lĭng'kĭj) 
n.
n.
- The act or process of linking.
- The condition of being linked.
- A connection or relation; an association.
- A negotiating policy of making agreement on one issue dependent on progress toward another objective.
- A system of interconnected machine elements, such as rods, springs, and pivots, used to transmit power or motion.
- Electricity. A measure of the induced voltage in a circuit caused by a magnetic flux and equal to the flux times the number of turns in the coil that surrounds it.
- Genetics. An association between two or more genes such that the traits they control tend to be inherited together.
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linkage
Britannica Concise Encyclopedia:
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linkage
In mechanical engineering, a system of solid, usually metallic, links (bars) connected to two or more other links by pin joints (hinges), sliding joints, or ball-and-socket joints to form a closed chain or a series of closed chains. When one link is fixed, the possible movements of the other links relative to the fixed link and to one another depend on the number of links and the number and types of joints. With four pin-connected links, for example, the links all move in parallel planes, and regardless of which link is fixed, the others move in a fixed way relative to the fixed link. With various relative lengths of the links, this four-bar linkage becomes a useful mechanism for converting uniform rotary to non-uniform rotary motion or continuous rotary to oscillatory motion. It is the most commonly used linkage mechanism in machine construction.
For more information on linkage, visit Britannica.com.
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genetics
mechanism
mechanism
(genetics)
Failure of two or more genes to recombine at random as a result of their location on the same chromosome pair. Among the haploid products of a cell which has gone through meiosis, two genes located in the same chromosome pair remain in their two original combinations of alleles (“parental”) unless an odd number of exchanges of homologous segments occurred within the interval bounded by their loci. The incidence of exchanges of homologous segments at meiosis is roughly proportional to the length of the chromosome segment between two loci. The percentage of recombinants thus provides an estimate of this length and a basis for constructing gene maps on which linked loci are arranged in linear order and spaced out in proportion to the recombination percentages between them. See also Meiosis.
Linkage (mechanism)
A set of rigid bodies, called links, joined together at pivots by means of pins or equivalent devices. A body is considered to be rigid if, for practical purposes, the distances between points on the body do not change. Linkages are used to transmit power and information. They may be employed to make a point on the linkage follow a prescribed curve, regardless of the input motions to the linkage. They are also used to produce angular or linear displacement. See also Link; Mechanism.
If the links are bars the linkage is termed a bar linkage. A common form of bar linkage is one for which the bars are restricted to a given plane, such as a four-bar linkage. A commonly occurring variation of the four-bar linkage is the linkage used in reciprocating engines (see illustration). Slider C is the piston in a cylinder, link 3 is the connecting rod, and link 4 is the crank. (Link 1 is the fixed base, A and D are pivots, R is the length of the crank, L is the length of the connecting rod, and τ denotes the angle of the crank.) This mechanism transforms a linear into a circular motion, or vice versa. The straight slider in line with the crank center is equivalent to a pivot at the end of an infinitely long link. See also Four-bar linkage; Pantograph.
Slider crank mechanism.
Computer Desktop Encyclopedia:
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hypertext
A linkage between related information. Hypertext is the foundation of the World Wide Web, enabling users to click on a link to obtain more information on a subsequent page on the same site or from a Web site anywhere in the world. Hypertext is the umbrella term for all links, whether appearing as text (word, phrase or sentence) or as an icon or other graphical element, the latter technically called a "hypergraphic." The terms "hypertext," "hyperlink" and "link" are also used synonymously. See hypermedia, live link and virtual hypertext.
The term was coined by Ted Nelson in 1963. However, his vision was much more expansive than the one-way links of today's Web. Nelson proposed two-way linking and support for non-hierarchical organization (for more information, visit
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Barron's Real Estate Dictionary:
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linkage
Physical or economic concept pertaining to the time and distance between a land use and support facilities, or between people and their activities.
Example: Examples of linkage are:
• subdivision proximity to schools, shopping, houses of worship
• commuter proximity to streets, highways, rail lines, buses
Example: Examples of linkage are:
• subdivision proximity to schools, shopping, houses of worship
• commuter proximity to streets, highways, rail lines, buses
| Link, Linealfoot | |
| Liquid Asset, Liquidate |
Roget's Thesaurus:
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linkage
noun
- A logical or natural association between two or more things: connection, correlation, interconnection, interdependence, interrelationship, link, relation, relationship, tie-in. Informal hookup. See connect.
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Linkage occurs when an investor is able to purchase a security on one financial exchange and sell it on another. Certain depositary receipts, such as American Depositary Receipts (ADRs), allow for linkage, which means that an investor can purchase shares of a company on a foreign exchange, such as the Toronto Stock Exchange, and then sell those shares on a domestic exchange, such as the New York Stock Exchange.
Investopedia Says:
Linkage should not be confused with arbitrage situations where an investor looks to profit from price discrepancies for equivalent securities trading on different exchanges. As financial markets progress, specifically with the growth of electronic exchanges spreading, the phenomenon of linkage will become more relevant and useful for investors in the future.
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- (in genetics) an association of two or more nonallelic genes so that they do not show independent assortment; i.e. they tend to be transmitted together usually due to physical association on the same chromosome.
- (in chemistry) an informal term for bond (def. 1). See also link.
| link, linewidth, linearly polarized | |
| linkage disequilibrium, linkage group, linkage map |
Saunders Veterinary Dictionary:
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linkage
1. the connection between different atoms in a chemical compound, or the symbol representing it in structural formulae. See also bond.
2. in genetics, the association of genes having located on the same chromosome, which results in the tendency of a group of such nonallelic genes to be associated in inheritance (linkage disequilibrium). Called also syntenic group.
- disequilibrium l. — the inheritance of two alleles together at a higher than expected frequency.
- l. map — see genetic map.
Mosby's Dental Dictionary:
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linkage
(ling'kəj)
n
n
The connection between two or more objects. In computer programming, coding that connects two separately coded routines.
Random House Word Menu:
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categories related to 'linkage'
- Genetics, Heredity, and Evolution - linkage: tendency of genes located near each other on chromosomes to be inherited together
- Machinery and Mechanical Devices - linkage: arrangement and coupling of simple machine elements into compound machines
- Working Parts - linkage: series of metal rods or levers that transmit motion from one unit to another
Wikipedia on Answers.com:
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Linkage
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Look up linkage in Wiktionary, the free dictionary. |
Linkage generally means "the manner or style of being united", and can refer to:
- Genetic linkage, the tendency of certain genes to be inherited together
- Flux linkage, the total flux passing through a surface formed by a closed conducting loop
- Linkage (mechanical), assemblies of links designed to manage forces and movement
- Linkage (policy), a Cold War policy of the United States of America towards the Soviet Union and Communist China
- Linkage (linguistics), a group of undoubtedly related languages
- Linkage (software), a concept in computer programming describing how names can or can not refer to the same entity throughout a program
- Linkage (album), the third album by J-pop singer Mami Kawada, released in 2010
See also
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This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article. |
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American Heritage Dictionary
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
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McGraw-Hill Encyclopedia of Science and Technology. Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved.
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Barron's Real Estate Dictionary
Dictionary of Real Estate Terms. Copyright © 2008 by Barron's Educational Series, Inc. All rights reserved.
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Investopedia Financial Dictionary
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Oxford Dictionary of Biochemistry
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Saunders Comprehensive Veterinary Dictionary 3rd Edition. Copyright © 2007 by D.C. Blood, V.P. Studdert and C.C. Gay, Elsevier. All rights reserved.
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