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Definition of Concentration

Babylon English Dictionary

careful attention; strength of a solution; assembly, gathering
Concentration Definition from Language, Idioms & Slang Dictionaries & Glossaries
Webster's Revised Unabridged Dictionary (1913)
(n.)
The act or process of removing the dress of ore and of reducing the valuable part to smaller compass, as by currents of air or water.
  
(n.)
The act or process of reducing the volume of a liquid, as by evaporation.
  
(n.)
The act or process of concentrating; the process of becoming concentrated, or the state of being concentrated; concentration.
  
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
hEnglish - advanced version

concentration
\con`cen*tra"tion\ (?), n. [cf. f. concentration.]
1. the act or process of concentrating; the process of becoming concentrated, or the state of being concentrated; concentration. concentration of the lunar beams. intense concetration of thought. herschel.
2. the act or process of reducing the volume of a liquid, as by evaporation. the acid acquires a higher degree of concentration.
3. (metal.) the act or process of removing the dress of ore and of reducing the valuable part to smaller compass, as by currents of air or water.
concentration
n
1. the strength of a solution; number of molecules of a substance in a given volume (expressed as moles/cubic meter)
2. the spatial property of being crowded together [syn: density, denseness, compactness]
[ant: distribution]

3. strengthening the concentration (as of a solute in a mixture) by removing extraneous material [ant: dilution]
4. increase in density
5. complete attention; intense mental effort [syn: engrossment, absorption]


6. bringing together military forces
7. great and constant diligence and attention [syn: assiduity, assiduousness]




  similar words(1) 



 molar concentration 
English Phonetics

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WordNet 2.0

Noun
1. the strength of a solution; number of molecules of a substance in a given volume (expressed as moles/cubic meter)
(hypernym) property
(hyponym) titer, titre
(derivation) concentrate
2. the spatial property of being crowded together
(synonym) density, denseness, compactness
(antonym) distribution, dispersion
(hypernym) spacing, spatial arrangement
(hyponym) bits per inch, bpi
(derivation) concentrate
3. strengthening the concentration (as of a solute in a mixture) by removing extraneous material
(antonym) dilution
(hypernym) strengthening
(hyponym) pervaporation
(derivation) condense, concentrate, contract
4. increase in density
(hypernym) increase
(hyponym) compaction, compression, concretion, densification
(derivation) boil down, reduce, decoct, concentrate
5. complete attention; intense mental effort
(synonym) engrossment, absorption, immersion
(hypernym) attention
(hyponym) focus, focusing, focussing, direction, centering
(derivation) concentrate, focus, center, centre, pore, rivet
6. bringing together military forces
(hypernym) assembly, assemblage, gathering
(derivation) concentrate
7. great and constant diligence and attention
(synonym) assiduity, assiduousness
(hypernym) diligence, industriousness, industry
(hyponym) intentness, engrossment
(derivation) concentrate, focus, center, centre, pore, rivet
Concentration Definition from Government Dictionaries & Glossaries
EU English Glossary
A concentration is the result of a merger between two or more previously independent enterprises, but may also be the result of the takeover of an enterprise by another enterprise acting alone (sole control) or by two or more enterprises acting jointly (joint control).

Under European competition law, concentrations with a Community dimension (i.e. exceeding the turnover thresholds laid down in the 1989 Merger Control Regulation) are subject to a control procedure which gives the Commission the power to assess their compatibility with the common market and, where appropriate, to prohibit them. Under that Regulation, a concentration with a Community dimension "which creates or strengthens a dominant position as a result of which effective competition would be significantly impeded in the common market or in a substantial part of it shall be declared incompatible with the common market."

With a view to determining the compatibility of a concentration with the common market, the Commission takes account on a case-by-case basis of several factors, such as the concepts of "Community dimension", "dominant position", "effective competition" and "relevant market".

See:

•Competition
•Enterprise policy

© European Communities, 1995-2004
Concentration Definition from Science & Technology Dictionaries & Glossaries
Electrochemistry Dictionary
"The measure of the amount of dissolved material (solute) in a solution. It can be expressed in a variety of ways. Expressions in weight percent, and grams of solute per liter of solution are common. A more fundamental way to express concentration is used in chemistry: the ""molar"" concentration. A solution is considered one molar (1 M) if it contains as many grams of solute per liter of solution as is the molecular weight of the solute (the so called gram-mole). This provides an atomistically fundamental expression because one gram-mole of any material will contain the same (and very large) number of molecules. One gram-mole of hydrogen gas contains the exact same number of molecules as one gram-mole of table salt (sodium chloride), even though the latter is much heavier. In this dictionary, the term ""concentration"" always designates ""molarity"" unless otherwise specified. "
General Chemistry Glossary
1. A measure of the amount of substance present in a unit amount of mixture. The amounts can be expressed as moles , masses, or volumes. 2. The process of increasing the amount of substance in a given amount of mixture.
Concentration Definition from Computer & Internet Dictionaries & Glossaries
Integrated Circuit Terminology
the amount of a substance per unit area or volume. Concentration is commonly used to refer to the amount of dopant in a semiconductor as atoms per area or volume, or to refer to elements added to materials to change the material properties, etc. May be in weight or atomic percent or number per unit area or volume.
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Concentration Definition from Encyclopedia Dictionaries & Glossaries
Wikipedia English - The Free Encyclopedia
In chemistry, concentration is the abundance of a constituent divided by the total volume of a mixture. Several types of mathematical description can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration. The term concentration can be applied to any kind of chemical mixture, but most frequently it refers to solutes and solvents in solutions. The molar (amount) concentration has variants such as normal concentration and osmotic concentration.

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Concentration Definition from Society & Culture Dictionaries & Glossaries
EPA Glossary of Climate Change Terms
Amount of a chemical in a particular volume or weight of air, water, soil, or other medium. See parts per billion, parts per million. See parts per billion, parts per million.
Provided as a public service by the U.S. Environmental Protection Agency. Reference list click here.
EPA Terms of Environment
The relative amount of a substance mixed with another substance. An example is five ppm of carbon monoxide in air or 1 mg/l of iron in water.
Provided as a public service by the U.S. Environmental Protection Agency
Environmental Engineering (English ver.)
The amount of material dissolved in a unit of solution, expressed in mg/L.
Concentration Definition from Religion & Spirituality Dictionaries & Glossaries
Rakefet
Concentration With meditation, an equivalent for certain parts of yoga, as found in samadhi, dharana; the removal or surmounting of distractions originating in the mind and centering the latter on the spiritual and intellectual objective to be attained, which in the best sense is union with the inner god, the divine monad -- a conscious identification of oneself with the universal through the individual's innate divinity. The method of meditative concentration prescribed in the Bhagavad-Gita is to perform all the duties of life without either attachment or avoidance. The hindrances to concentration which are to be removed are those arising from anger, lust, vanity, fear, sloth, etc. Such obstacles are removed by lifting the mind above them or by deliberately ignoring them, since directly fighting with them serves to concentrate the mind on them, thus defeating the object aimed at; and by cultivating the spirit of impersonal love and the light of wisdom which it evokes. Thus the blending of the personal self with the impersonal self is achieved by an orderly process of self-directed evolution, first by unselfish work in the cause of humanity, continued in the various degrees of chelaship, culminating in initiation.
Concentration has often been perverted to mean a kind of personal self-culture, having for its aim the attainment of personal power or self-satisfaction. If unsuccessful, the attempt upsets the balance of the constitution, and if successful, it sows a bitter harvest of aroused personality for future reaping; for when yearning for sympathetic fellowship with our fellowmen we shall find our faculties counterworking us.
to be continue "Concentration2"
Concentration Definition from Medicine Dictionaries & Glossaries
CDC Radiological Terms
the ratio of the amount of a specific substance in a given volume or mass of solution to the mass or volume of solvent.
  
Source: Centers for Disease Control and Prevention (CDC) ( About )