concentration

English

Etymology

concentrate +‎ -ion

Pronunciation

  • Rhymes: -eɪʃən

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

The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout#Translations.

See also

Further reading

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

Further reading

Interlingua

Noun

concentration (plural concentrationes)

  1. concentration (state or degree of being concentrated)
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