|a chattering or flighty, light-headed person.|
|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|1.||intense mental application; complete attention|
|2.||the act or process of concentrating|
|3.||something that is concentrated|
|4.||c the strength of a solution, esp the amount of dissolved substance in a given volume of solvent, usually expressed in moles per cubic metre or cubic decimetre (litre)|
|5.||the process of increasing the concentration of a solution|
|a. the act of bringing together military forces|
|b. the application of fire from a number of weapons against a target|
|7.||economics the degree to which the output or employment in an industry is accounted for by only a few firms|
|8.||another name (esp US) for Pelmanism|
concentration con·cen·tra·tion (kŏn'sən-trā'shən)
An increase of the strength of a pharmaceutical preparation by the extraction, precipitation, and drying of its crude active agent.
An increase in the strength of a fluid or gas in a mixture by purification, evaporation, or diffusion.
The amount of a specified substance in a unit amount of another substance.
|concentration (kŏn'sən-trā'shən) Pronunciation Key
The amount of a particular substance in a given amount of another substance, especially a solution or mixture.