Concentration

Noun

1. 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.
2. The direction of attention to a specific object.
3. The act, process or product of reducing the volume of a liquid, as by evaporation.
4. 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.
5. A field or course of study on which one focuses, especially as a student in a college or university.