American English

Definition of concentrate verb from the Oxford Advanced American Dictionary



    Verb Forms present simple I / you / we / they concentrate
    he / she / it concentrates
    past simple concentrated
    -ing form concentrating
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  1. 1[intransitive, transitive] to give all your attention to something and not think about anything else concentrate (on something/on doing something) I can't concentrate with all that noise going on. concentrate something Nothing concentrates the mind better than the knowledge that you could die tomorrow (= it makes you think very clearly). concentrate something (on something/on doing something) I decided to concentrate all my efforts on finding somewhere to live.
  2. 2[transitive] concentrate something + adv./prep. to bring something together in one place Power is largely concentrated in the hands of a small elite. We need to concentrate resources on the most run-down areas. Fighting was concentrated around the towns to the north. Never concentrate the heat in one place for too long.
  3. 3[transitive] concentrate something (technology) to increase the strength of a substance by reducing its volume, for example by boiling it synonym reduce
  4. Phrasal Verbsconcentrate on something
See the Oxford Advanced Learner's Dictionary entry: concentrate