the act of concentrating; the state of being concentrated.
2.
exclusive attention to one object; close mental application.
3.
something concentrated: a concentration of stars.
4.
Military.
a.
the assembling of military or naval forces in a particular area in preparation for further operations.
b.
a specified intensity and duration of artillery fire placed on a small area.
5.
the focusing of a student's academic program on advanced study in a specific subject or field.
6.
Chemistry. (in a solution) a measure of the amount of dissolved substance contained per unit of volume.
7.
Also called memory.Cards. a game in which all 52 cards are spread out face down on the table and each player in turn exposes two cards at a time and replaces them face down if they do not constitute a pair, the object being to take the most pairs by remembering the location of the cards previously exposed.
concentrationAudio Help (kŏn'sən-trā'shən) Pronunciation Key
The amount of a particular substance in a given amount of another substance, especially a solution or mixture.
Con`cen*tra"tion\, n. [Cf. F. concentration.]1. The act or process of concentrating; the process of becoming concentrated, or the state of being concentrated; concentration. Concentration of the lunar beams. --Boyle. Intense concetration of thought. --Sir J. Herschel. 2. The act or process of reducing the volume of a liquid, as by evaporation. The acid acquires a higher degree of concentration. --Knight. 3. (Metal.) 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.