concentration
Use Concentration in a sentence
sənˈtreɪ noun
1.
the act of concentrating; the state of being concentrated.
2.
exclusive attention to one object; close mental application.
3.
something concentrated: a concentration of stars.
4.
Military.
a.
the assembling of military or naval forces in a particular area in preparation for further operations.
b.
a specified intensity and duration of artillery fire placed on a small area.
5.
the focusing of a student's academic program on advanced study in a specific subject or field.
6.
Chemistry. (in a solution) a measure of the amount of dissolved substance contained per unit of volume.
7.
Also called memory. Cards. a game in which all 52 cards are spread out face down on the table and each player in turn exposes two cards at a time and replaces them face down if they do not constitute a pair, the object being to take the most pairs by remembering the location of the cards previously exposed.
Related forms
hy·per·con·cen·tra·tion, noun
non·con·cen·tra·tion, noun
o·ver·con·cen·tra·tion, noun
pre·con·cen·tra·tion, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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|
Link To concentration
00:10
Concentration
is always a great word to know.
So is heterogeneous. Does it mean:
| rapid oxidation accompanied by heat and light, or a chemical combination attended by production of heat and light |
| a mixture composed of different substances or the same substance in different phases, such as solid ice and liquid water |
Collins
World English Dictionary
concentration (ˌkɒnsənˈtreɪʃən) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —n | |
| 1. | intense mental application; complete attention |
| 2. | the act or process of concentrating |
| 3. | something that is concentrated |
| 4. | c the strength of a solution, esp the amount of dissolved substance in a given volume of solvent, usually expressed in moles per cubic metre or cubic decimetre (litre) |
| 5. | the process of increasing the concentration of a solution |
| 6. | military |
| a. the act of bringing together military forces | |
| b. the application of fire from a number of weapons against a target | |
| 7. | economics the degree to which the output or employment in an industry is accounted for by only a few firms |
| 8. | another name (esp US) for Pelmanism |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History
concentration
1630s, "action of bringing to a center," noun of action from verb concentrate (q.v.). Meaning "a mass so collected" is from 1670s; "continuous focus of mental activity" is from 1846.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
concentration con·cen·tra·tion (kŏn'sən-trā'shən)
n.
An increase of the strength of a pharmaceutical preparation by the extraction, precipitation, and drying of its crude active agent.
An increase in the strength of a fluid or gas in a mixture by purification, evaporation, or diffusion.
The amount of a specified substance in a unit amount of another substance.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
| concentration (kŏn'sən-trā'shən) Pronunciation Key
The amount of a particular substance in a given amount of another substance, especially a solution or mixture. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences
The participants then had to indicate at what concentration they could detect taste.
The redeployment was a new concentration of agents along the borderline itself.
First a low-glucose plasma concentration, then the heart, now the gallbladder.
Against this forested backdrop lies the nation's richest concentration of historical sites.
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