The act, process or product of reducing the volume of a liquid, as by evaporation.
The proportion of a substance in a whole.
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.
The direction of attention to a specific object.
A field or course of study on which one focuses, especially as a student in a college or university.
The amount of solute in a solution measured in suitable units (e.g., parts per million (ppm))
The matching game pelmanism.
A solution that has had additional solvent, such as water, added to it into order to make it less concentrated.
The process of bringing in unskilled workers to replace skilled ones, for example during wartime.
The process of making something dilute.