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Webster 1913 Edition

Concentration

Conˊcen-tra′tion

,
Noun.
[Cf. F.
concentration
.]
1.
The act or process of concentrating; the process of becoming concentrated, or the state of being concentrated; concentration.
Concentration
of the lunar beams.
Boyle.
Intense
concetration
of thought.
Sir J. Herschel.
2.
The act or process of reducing the volume of a liquid, as by evaporation.
The acid acquires a higher degree of
concentration
.
Knight.
3.
(Metal.)
The act or process of removing the dress of ore and of reducing the valuable part to smaller compass, as by currents of air or water.

Webster 1828 Edition

Concentration

CONCENTRATION

,
Noun.
The act of concentrating; the act of bringing nearer together; collection into a central point; compression into a narrow space; the state of being brought to a point.
Note. The verb concentrate is sometimes accented on the first syllable. The reason is, with the primary accent on the first syllable, and a secondary accent on the third, the pronunciation of the participles, concentrating, concentrated, is much facilitated.

Definition 2024

concentration

concentration

English

Noun

concentration ‎(usually uncountable, plural concentrations)

  1. The act, process or ability of concentrating; the process of becoming concentrated, or the state of being concentrated.
    1. The direction of attention to a specific object.
    2. The act, process or product of reducing the volume of a liquid, as by evaporation.
    3. The act or process of removing the dress of ore and of reducing the valuable part to smaller compass, as by currents of air or water.
  2. A field or course of study on which one focuses, especially as a student in a college or university.
  3. The proportion of a substance in a whole.
    • 2013 July-August, Philip J. Bushnell, “Solvents, Ethanol, Car Crashes & Tolerance”, in American Scientist:
      Surprisingly, this analysis revealed that acute exposure to solvent vapors at concentrations below those associated with long-term effects appears to increase the risk of a fatal automobile accident. Furthermore, this increase in risk is comparable to the risk of death from leukemia after long-term exposure to benzene, another solvent, which has the well-known property of causing this type of cancer.
    1. (chemistry) The amount of solute in a solution measured in suitable units (e.g., parts per million (ppm))
  4. The matching game pelmanism.

Coordinate terms

Translations

See also

French

Etymology

First attested 1732 concentrer +‎ -ation.

Noun

concentration f ‎(plural concentrations)

  1. concentration (mental state of being concentrated)
  2. concentration (quality of being concentrated)
    la concentration de sucre‎
    the concentration of sugar

Etymology

concentrate +‎ -ion

Pronunciation

  • Rhymes: -eɪʃən

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