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Definition of: concentration
(kon′sən·trā′shən) noun
1. The act of concentrating: said especially of focusing the attention upon a single object, problem, task, etc.
2. That which is concentrated.
3. A medicine strengthened by evaporation of inactive ingredients.
4. Chem. The amount of a substance per unit volume: in a solution it is the amount of the substance dissolved by a given quantity of the solvent.
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