concentration
/ˌkɑn.sənˈtɹeɪ.ʃən/ noun B1- The act, process or ability of concentrating; the process of becoming concentrated, or the state of being concentrated.
- The direction of attention to a specific object.
- The act, process or product of reducing the volume of a liquid, as by evaporation.
- 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.
- A field or course of study on which one focuses, especially as a student in a college or university.
- The proportion of a substance in a whole.
- The amount of solute in a solution measured in suitable units (e.g., parts per million (ppm))
- The matching game pelmanism.
Plural concentrations
From the library
Intense mental concentration has a curious way of blotting out what has passed.
“This writing is of extraordinary interest,” said Holmes, who had been examining it with intense concentration.
It is a singular thing, but I find that a concentrated atmosphere helps a concentration of thought.
I knew that seclusion and solitude were very necessary for my friend in those hours of intense mental concentration during which he weighed every particle of evidence, constructed alternative theories, balanced one against the other, and made up his mind as to which points were essential and which immaterial.
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