concentrated

/ˈkän(t)-sən-ˌtrā-təd/

adjective

  1. rich in respect to a particular or essential element : made less dilute or diffuse

  2. contained or existing or happening together in a small or narrow space or area : not spread out

  3. intense, intensive

concentrated sulfuric acid

verb

  1. to bring or direct toward a common center or objective : focus

  2. to gather into one body, mass, or force

  3. to accumulate (a toxic substance) in bodily tissues

concentrate one's efforts

Power was concentrated in a few able hands.

idiom

  1. to be mainly found (in a place)

The population is concentrated near the coast.