Concentrate

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.

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 dilute.

To approach or meet in a common center; to consolidate; as, population tends to concentrate in cities.

be cooked until very little liquid is left; "The sauce should reduce to one cup"

the desired mineral that is left after impurities have been removed from mined ore

a concentrated example of something; "the concentrate of contemporary despair"

a concentrated form of a foodstuff; the bulk is reduced by removing water

direct one's attention on something; "Please focus on your studies and not on your hobbies"