con·​cen·​tra·​tion | \ ˌkän(t)-sən-ˈtrā-shən How to pronounce concentration (audio) , -ˌsen-\

Definition of concentration

1a : the act or process of concentrating : the state of being concentrated especially : direction of attention to a single object All that noise is disturbing my concentration.
b : an academic major or area of focus within a major The student chose law as his concentration.
2 : a concentrated mass or thing a concentration of wealth in the merchant class
3 : the amount of a component in a given area or volume The ozone concentration in the lower stratosphere has declined.

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Synonyms & Antonyms for concentration



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Examples of concentration in a Sentence

All that noise is disturbing my concentration. The job required her full concentration. When you're tired it's easy to lose your concentration. There was a concentration on ethics within the agency. There is a concentration of wealth in the cities. He objects to the concentration of power in the hands of a few rich men.
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Recent Examples on the Web Some product labels overstate or understate CBD concentration, a 2017 Penn Medicine study showed. Sophie Quinton,, "CBD may be natural, but is it safe?," 22 Oct. 2019 The largest concentration of customers who could be affected — more than 5,000 — is in San Bernardino County. Los Angeles Times, "PG&E may shut off power in 17 California counties as dangerous winds return," 21 Oct. 2019 However, the picture isn’t all that rosy, if a heat map of the concentration (share of total population) of HNWIs around every location in Mumbai is anything to go by. Ananya Bhattacharya, Quartz India, "Mapped: In India’s wealthiest city, the ultra-rich and slum dwellers share neighbourhoods," 18 Oct. 2019 Gold ore can be viable at concentrations as low as 0.0001%, while copper becomes uneconomic below 0.5%. Matthew Ross, The Conversation, "Mining powers modern life, but can leave scarred lands and polluted waters behind," 3 Oct. 2019 And with an average of more than 20 weeks of snow every winter and the highest concentration of adventure outfitters in the province, winter is one of the best times of year to visit. Outside Online, "Saguenay–Lac-Saint-Jean Is an Outdoor Winter Playground," 2 Oct. 2019 The traditionally hierarchical model, with a concentration of power at the top, has persisted since the Industrial Revolution, when assembly-line work was in its infancy and Taylorism was the scientific management practice of the day. Aimee Groth, Quartz at Work, "How can we design companies for human flourishing?," 28 Sep. 2019 There is an over-concentration of wealth in some hands. Vivienne Walt / Paris, Time, "'I'm in This Death Valley.' Read Our Full Conversation with Emmanuel Macron," 19 Sep. 2019 Subsequent samples measured far lower concentrations, with the highest at 14 parts per million, SPU spokeswoman Sabrina Register said in an email. Lewis Kamb, The Seattle Times, "Seattle police officer assigned to clean up homeless camps files $10 million claim, alleges polluted site made him sick," 19 Sep. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'concentration.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of concentration

1606, in the meaning defined at sense 2

History and Etymology for concentration

see concentrate entry 1

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Time Traveler for concentration

Time Traveler

The first known use of concentration was in 1606

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Statistics for concentration

Last Updated

12 Nov 2019

Cite this Entry

“Concentration.” The Dictionary, Merriam-Webster Inc., Accessed 21 November 2019.

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More Definitions for concentration


How to pronounce concentration (audio)

English Language Learners Definition of concentration

: the ability to give your attention or thought to a single object or activity : the ability to concentrate
: the act of giving your attention to a single object or activity
: a large amount of something in one place


con·​cen·​tra·​tion | \ ˌkän-sən-ˈtrā-shən How to pronounce concentration (audio) \

Kids Definition of concentration

1 : close attention to or thought about a subject There is a concentration on math in the curriculum.
2 : the ability to pay close attention I lost my concentration when an ambulance drove past.
3 : a large amount of something or a large number of people in one place


con·​cen·​tra·​tion | \ ˌkän(t)-sən-ˈtrā-shən, -ˌsen- How to pronounce concentration (audio) \

Medical Definition of concentration

1 : the act or action of concentrating: as
a : a directing of the attention or of the mental faculties toward a single object
b : an increasing of strength (as of a solute or a gas in a mixture) or a purifying by partial or total removal of diluents, solvents, admixed gases, extraneous material, or waste (as by evaporation or diffusion)
2 : a crude active principle of a vegetable especially for pharmaceutical use in the form of a powder or resin
3 : the relative content of a component (as dissolved or dispersed material) of a solution, mixture, or dispersion that may be expressed in percentage by weight or by volume, in parts per million, or in grams per liter

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