Retention may refer to:
General
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Recall (memory), in learning, the ability to recall facts and figures in memory
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Memory and retention in learning
Human memory is the process in which information and material is encoded, stored and retrieved in the brain. Memory is a property of the central nervous system, with three different classifications: short-term, long-term and sensory memory. The th ...
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Selective retention
Selective retention, in relating to the mind, is the process whereby people more accurately remember messages that are closer to their interests, values and beliefs, than those that are in contrast with their values and beliefs, selecting what to ...
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Cultural retention
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Customer retention
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University student retention
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Employee retention, the ability to keep employees within an organization
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Forced retention
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Grade retention, in schools, keeping a student in the same grade for another year (that is, not promoting the student to the next higher grade with his/her classmates)
*Retention or
retainage of an agreed portion of a contract price until project completion
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Retention basin
A retention basin, sometimes called a wet pond, wet detention basin, or stormwater management pond (SWMP), is an artificial pond with vegetation around the perimeter and a permanent pool of water in its design. It is used to manage stormwater r ...
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Retention election, in the United States court system, a process whereby a judge is periodically subject to a vote in order to remain in the position of judge
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Retention rate
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Retention ratio, in company earnings
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Retention of vision, in magic
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Water retention (medicine), abnormal accumulation of fluid in the body
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Urinary retention, the lack or inability to urinate
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Variable retention, in land management and forestry conservation
Information and records
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Retention (news server), in Usenet, the time a news server holds a newsgroup posting before deleting it as no longer relevant
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Data retention, in law and computing
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Data retention (telecommunication)
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Retention period A retention period (associated with a retention schedule or retention program) is an aspect of records and information management (RIM) and the records life cycle that identifies the duration of time for which the information should be maintained o ...
, of a document, in records management
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Retention of title clause A retention of title clause (also called a reservation of title clause or a ''Romalpa'' clause in some jurisdictions) is a provision in a contract for the sale of goods that the title to the goods remains vested in the seller until the buyer fulfils ...
, in law
Chemistry
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Retention agent A retention agent is a chemical process that improves the retention of a functional chemical in a substrate. The result is that totally fewer chemicals are used to get the same effect as the functional chemical and fewer chemicals go to waste.
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, a process chemical
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CO₂ retention
Hypercapnia (from the Greek ''hyper'' = "above" or "too much" and ''kapnos'' = "smoke"), also known as hypercarbia and CO2 retention, is a condition of abnormally elevated carbon dioxide (CO2) levels in the blood. Carbon dioxide is a gaseous pro ...
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Retention of configuration
Walden inversion is the inversion of a stereogenic center in a chiral molecule in a chemical reaction. Since a molecule can form two enantiomers around a stereogenic center, the Walden inversion converts the configuration of the molecule from ...
, in chemical reactions
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ER retention, proteins retained in the endoplasmic reticulum after folding
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Retention factor
Maths
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Retention distance
Retention distance, or ''RD'', is a concept in thin layer chromatography, designed for quantitative measurement of ''equal-spreading'' of the spots on the chromatographic plate and one of the Chromatographic response functions. It is calculated f ...
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Retention uniformity
Retention uniformity, or ''RU'', is a concept in thin layer chromatography. It is designed for the quantitative measurement of ''equal-spreading'' of the spots on the chromatographic plate and is one of the Chromatographic response functions.
For ...
See also
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Water retention (disambiguation) Water retention can refer to:
* Water retention (medicine), an abnormal accumulation of fluid in the circulatory system or within the tissues or cavities of the body
:*Edema, an abnormal accumulation of fluid beneath the skin, or in one or more cav ...
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Retainer (disambiguation)
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