1. To bring to, or direct toward, a common center; to unite more closely; to gather into one body, mass, or force; to fix; as, to concentrate rays of light into a focus; to concentrate the attention. (He) concentrated whole force at his own camp. Motley.
2. To increase the strength and diminish the bulk of, as of a liquid or an ore; to intensify, by getting rid of useless material; to condense; as, to concentrate acid by evaporation; to concentrate by washing; — opposed to Ant: dilute. Spirit of vinegar concentrated and reduced to its greatest strength. Arbuthnot.
Syn.
— To combine; to condense; to consolidate.
CONCENTRATE
Con*cen"trate ( or ), v. i.
Defn: To approach or meet in a common center; to consolidate; as, population tends to concentrate in cities.
CONCENTRATION
Con`cen*tra"tion, n. Etym: [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.)
Defn: 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.