English

Definition of concentrate verb from the Oxford Advanced Learner's Dictionary

        

    concentrate

     verb
    verb
    BrE BrE//ˈkɒnsntreɪt//
     
    ; NAmE NAmE//ˈkɑːnsntreɪt//
     
    Verb Forms present simple I / you / we / they concentrate
    BrE BrE//ˈkɒnsntreɪt//
     
    ; NAmE NAmE//ˈkɑːnsntreɪt//
     
    he / she / it concentrates
    BrE BrE//ˈkɒnsntreɪts//
     
    ; NAmE NAmE//ˈkɑːnsntreɪts//
     
    past simple concentrated
    BrE BrE//ˈkɒnsntreɪtɪd//
     
    ; NAmE NAmE//ˈkɑːnsntreɪtɪd//
     
    past participle concentrated
    BrE BrE//ˈkɒnsntreɪtɪd//
     
    ; NAmE NAmE//ˈkɑːnsntreɪtɪd//
     
    -ing form concentrating
    BrE BrE//ˈkɒnsntreɪtɪŋ//
     
    ; NAmE NAmE//ˈkɑːnsntreɪtɪŋ//
     
     
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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 (specialist) to increase the strength of a substance by reducing its volume, for example by boiling it synonym reduce
  4. Word Origin mid 17th cent. (in the sense ‘bring towards a centre’): Latinized form of concentre, fromcon- ‘together’ + centrum ‘centre’ or from French concentrer ‘to concentrate’. Sense (1) dates from the early 20th cent.Extra examples He concentrated mainly on the flying and spoke very little. I tried to work but I found I couldn’t concentrate. I was tired and couldn’t concentrate properly. She was sitting at her desk concentrating hard. I can’t concentrate with all that noise going on. Nothing concentrates the mind better than the knowledge that you could die tomorrow. She tried to concentrate, but her thoughts kept drifting back to the day before. We were told to concentrate on a black dot in the middle of the screen. We’re concentrating even harder on giving quality service this year. Phrasal Verbsconcentrate on something
See the Oxford Advanced American Dictionary entry: concentrate