concentration

noun con·cen·tra·tion \ ˌkän(t)-sən-ˈtrā-shən , -ˌsen- \
Updated on: 3 Dec 2017

Definition of concentration

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

  1. All that noise is disturbing my concentration.

  2. The job required her full concentration.

  3. When you're tired it's easy to lose your concentration.

  4. There was a concentration on ethics within the agency.

  5. There is a concentration of wealth in the cities.

  6. He objects to the concentration of power in the hands of a few rich men.

Recent Examples of concentration from the Web

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.

Origin and Etymology of concentration

Other Chemical Engineering Terms


CONCENTRATION Defined for English Language Learners

concentration

noun

Definition of concentration for English Language Learners

  • : 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


CONCENTRATION Defined for Kids

concentration

noun con·cen·tra·tion \ ˌkän-sən-ˈtrā-shən \

Definition of concentration for Students

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

Medical Dictionary

concentration

noun con·cen·tra·tion \ ˌkän(t)-sən-ˈtrā-shən, -ˌsen- \

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


Seen and Heard

What made you want to look up concentration? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

allowing a liquid or gas to pass through

Get Word of the Day daily email!

Test Your Vocabulary

Star Wars Words Quiz

  • cu-jedi-training
  • The bounty portion of bounty hunters (such as Boba Fett) comes from a Latin word meaning
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!