View source for Concentration (disambiguation)

{{disambig}}
'''Concentration''' may refer to:

==Science, engineering and technology==
{{r|Concentration}}

{{r|Mass concentration (geophysics)}}: A region of a planet or moon's crust that is denser than average.

==Economics==
{{r|Market concentration}}: The number and production share of firms in a market (or industry). 
{{r|Concentration ratio}}: An indicator of the relative size of business firms in relation to the pertinent industry as a whole.

==Others==

{{r|Concentration (geography)}}: The geographic location of a specific cluster or dense group of ethnic people, types of buildings, types of natural features (such as mountains, lakes, or forests), etc.
{{r|Concentration (military)}}: The bringing together of military forces.
{{r|Concentration (psychology)}}:
{{r|Concentration (cognitive)}}: Intense mental focus.
{{r|Concentration (politics)}}:
{{r|Concentration (game)}}: A card game.
{{r|Concentration camp}} A camp where civilians, enemy aliens, political prisoners, and sometimes unwanted ethnic groups are detained and confined under extremely harsh conditions (including the murder of the detainees as during the Holocaust in Nazi Germany).