Definition of concentration in English:

concentration

Line breaks: con|cen|tra¦tion
Pronunciation: /kɒns(ə)nˈtreɪʃ(ə)n
 
/

noun

1 [mass noun] The action or power of focusing all one’s attention: she was frowning in concentration
More example sentences
  • Hypnosis is a heightened state of concentration and focused attention.
  • This exercise will enhance your powers of attention and concentration.
  • Practicing the asanas teaches total concentration and focus of the mind, control of the breath and every part of the body in a mindful and conscious relaxation.
Synonyms
1.1 (concentration on/upon) Dealing with one particular thing above all others: concentration on the needs of the young can mean that the elderly are forgotten
More example sentences
  • Part of the reason for more concentration on mackerel is that there are problems in the anchovy fishery.
  • Meditation and direct experience were emphasized over concentration on studying the texts.
  • What recommends his book above all else is its painstaking concentration on what is truly significant in O'Connor's symbolism.
2A close gathering of people or things: the island has the greatest concentration of seabirds in the north-west
More example sentences
  • The most that intelligence could provide was some idea as to the concentration of troops at various points along the line, which might give some indication as to the timing and direction of future attacks.
  • They have more supporters, and of course there isn't the concentration of U.S. troops on the ground in that very mountainous and difficult area.
  • He told us that during the briefing, they were shown photos showing a concentration of German troops in the city, plus an armaments factory situated there.
Synonyms
gathering, cluster, mass, flock, congregation, assemblage, assembly, collection; accumulation, aggregation, agglomeration
2.1 [mass noun] The action of gathering together closely: the concentration of power in the hands of nobles
More example sentences
  • The Consumer Commission says it's watching this growing concentration closely but at the same time has just given Coles the green light to snap up the independent chain, Theos.
  • Kroes said she would tackle the issue of market concentration by scrutinising future mergers more meticulously.
  • Ore treatment at the Tomboy mill was by amalgamation and concentration until 1912, when cyanidization was added to the processes utilized.
3The relative amount of a particular substance contained within a solution or mixture or in a particular volume of space: the gas can collect in dangerous concentrations
More example sentences
  • If this concentration is above the legal limit, the plasma membrane denies an exit visa for toxic waste inside the cell until conditions outside the cell improve.
  • In this context it is interesting to consider the effect of PsbS concentration on NPQ.
  • Currently a clozapine plasma concentration above 350 ng/ml appears to have the greatest potential benefit.
3.1 [mass noun] The action of strengthening a solution by the removal or reduction of the diluting agent or by the selective accumulation of atoms or molecules: by concentration of cell contents and supercooling, frost-hardened plant tissues survive temperatures down to −10°C
More example sentences
  • There is no evidence for simple osmotic effects since dramatic changes in Tris buffer concentration did not change nuclear size.
  • The actual K + concentration of this solution was determined with an atomic absorption spectrometer.
  • The pH profile also indicates that the reaction is first-order in hydrogen ion concentration.

Definition of concentration in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day epyllion
Pronunciation: ɪˈpɪlɪən
noun
a narrative poem resembling an epic in style...