concentration

noun

con·​cen·​tra·​tion ˌkän(t)-sən-ˈtrā-shən How to pronounce concentration (audio)
-ˌsen-
1
a
: 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.

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. See More
Recent Examples on the Web The tricky part was figuring out the right concentrations: Too much alcohol dilutes the film formers, too little produces a longer dry time and a more obvious film. Maura Lynch, Allure, 21 Sep. 2023 However, the densest concentration of Trump’s potential running mates is not in South Dakota, but sprawled across Iowa and New Hampshire. Leah Askarinam, ABC News, 20 Sep. 2023 The concentration of polluted air was significantly higher in poorer countries, the researchers found. Noah Weiland, New York Times, 20 Sep. 2023 As concentrations of stratospheric aerosols increased, the cooling grew less uniform, and the climate became more distorted. Douglas Fox, Scientific American, 19 Sep. 2023 The magic of this serum is its relatively high concentration of oxyresveratrol, which Medik8 takes pains to keep stable and effective. Adam Hurly, Robb Report, 19 Sep. 2023 Experts say the growing uncertainty among China’s ruling elite has exposed the vulnerabilities of its one-party system – which have only been amplified by Xi’s concentration of personal power during what is now his third term. Nectar Gan, CNN, 19 Sep. 2023 But globally, emissions are still growing, as is the concentration of carbon dioxide in the atmosphere. Tom Yulsman, Discover Magazine, 15 Sep. 2023 Not so much because of security reasons, but because of our concentration. Nick Vivarelli, Variety, 15 Sep. 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'concentration.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

see concentrate entry 1

First Known Use

1606, in the meaning defined at sense 2

Time Traveler
The first known use of concentration was in 1606

Dictionary Entries Near concentration

Cite this Entry

“Concentration.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/concentration. Accessed 4 Oct. 2023.

Kids Definition

concentration

noun
con·​cen·​tra·​tion ˌkän(t)-sən-ˈtrā-shən How to pronounce concentration (audio)
-sen-
1
: the act or process of concentrating : the state of being concentrated
especially : direction of attention on a single object
don't disturb my concentration
2
: a concentrated mass
3
: the amount of an ingredient or part in relation to that of others : strength
the concentration of salt in a solution

Medical Definition

concentration

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