concentration
noun
con·cen·tra·tion
ˌkän(t)-sən-ˈtrā-shən 
-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.
Recent Examples on the Web
Charlotte is home to the largest concentration of Wake Forest alumni outside of Winston-Salem.
—
Wake Forest University, Charlotte Observer, 3 June 2025
Current data showed that the therapy's effects waned after 4–6 weeks due to declining concentrations of the medicine, requiring repeat injections.
—William A. Haseltine, Forbes.com, 2 June 2025
The heaviest concentrations of smoke are predicted for Saturday afternoon, with temporary clearing overnight before more smoke returns on Sunday and Monday.
—Martha McHardy, MSNBC Newsweek, 31 May 2025
Further, New York’s plan calls for expanding outreach and early warning systems in multiple languages and enhancing infrastructure in areas with high concentrations of Spanish speakers.
—Ivis García, The Conversation, 30 May 2025
See All Example Sentences for concentration
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Wake Forest University, Charlotte Observer, 3 June 2025
Current data showed that the therapy's effects waned after 4–6 weeks due to declining concentrations of the medicine, requiring repeat injections.
—William A. Haseltine, Forbes.com, 2 June 2025
The heaviest concentrations of smoke are predicted for Saturday afternoon, with temporary clearing overnight before more smoke returns on Sunday and Monday.
—Martha McHardy, MSNBC Newsweek, 31 May 2025
Further, New York’s plan calls for expanding outreach and early warning systems in multiple languages and enhancing infrastructure in areas with high concentrations of Spanish speakers.
—Ivis García, The Conversation, 30 May 2025
See All Example Sentences for concentration
Cite this Entry
“Concentration.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/concentration. Accessed 9 Jun. 2025.
Copy CitationKids Definition
concentration
noun
con·cen·tra·tion
ˌkän(t)-sən-ˈtrā-shən
-sen-
1
: the act or process of concentrating : the state of being concentrated
especially
: direction of attention on a single object
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-
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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