Real Dictionary

concentrate
If something is concentrated in an area, it is all there rather than being spread around.
verb: If you concentrate on something, or concentrate your mind on it, you give all your attention to it.

concentrate in American English
a substance that has been concentrated; specif., a liquid that has been made denser, as by the removal of some of its water
to bring to, or direct toward, a common center
to come to or toward a common center
intransitive verb: to bring all efforts, faculties, activities, etc., to bear on one thing or activity
noun: a concentrated form of something; a product of concentration
transitive verb: to bring or draw to a common center or point of union; converge; direct toward one point; focus

concentrate in British English
noun: a concentrated material or solution
verb: to come or cause to come to a single purpose or aim

concentrate in the Pharmaceutical Industry
noun: A concentrate is a product that has been concentrated, for example by the removal of liquid.