Focus on the pronunciation of concentration
English definition of “concentration”
› [C or U] the fact of there being a large number or amount of people or things of the same type in the same place: The state's highest concentration of wealth is in the metro areas. Denver has one of the biggest concentrations of tech workers in the country. By identifying geographical concentrations of industries, we can identify training needs that exist in those regions.
› [U] the fact of things being combined into a single group, or controlled by the same person or organization: This situation has resulted in the concentration of the industry in the hands of a few multinational companies.
› [U] the ability to give all of your attention to one particular activity, subject, or problem: Low costs and concentration on core business activities form the basis of our success. Many of the mistakes she made in the job were due to a lack of concentration. → See also buyer concentration, market concentration