English

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

     

    decelerate

     verb
    verb
    BrE BrE//ˌdiːˈseləreɪt//
     
    ; NAmE NAmE//ˌdiːˈseləreɪt//
     
    (formal)Verb Forms present simple I / you / we / they decelerate
    BrE BrE//ˌdiːˈseləreɪt//
     
    ; NAmE NAmE//ˌdiːˈseləreɪt//
     
    he / she / it decelerates
    BrE BrE//ˌdiːˈseləreɪts//
     
    ; NAmE NAmE//ˌdiːˈseləreɪts//
     
    past simple decelerated
    BrE BrE//ˌdiːˈseləreɪtɪd//
     
    ; NAmE NAmE//ˌdiːˈseləreɪtɪd//
     
    past participle decelerated
    BrE BrE//ˌdiːˈseləreɪtɪd//
     
    ; NAmE NAmE//ˌdiːˈseləreɪtɪd//
     
    -ing form decelerating
    BrE BrE//ˌdiːˈseləreɪtɪŋ//
     
    ; NAmE NAmE//ˌdiːˈseləreɪtɪŋ//
     
     
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  1. 1[intransitive, transitive] decelerate (something) to reduce the speed at which a vehicle is travelling
  2. 2[intransitive, transitive] decelerate (something) to become or make something become slower synonym slow down Economic growth decelerated sharply in June.
  3. opposite accelerate
    Word Origin late 19th cent.: from de- (expressing removal) + a shortened form of accelerate.
See the Oxford Advanced American Dictionary entry: decelerate