American English

Definition of supplement verb from the Oxford Advanced American Dictionary

      

    supplement

     verb
    verb
    NAmE//ˈsʌpləˌmɛnt//
     
    Verb Forms present simple I / you / we / they supplement
     
    he / she / it supplements
     
    past simple supplemented
     
    -ing form supplementing
     
     
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  1. to add something to something in order to improve it or make it more complete supplement something with something a diet supplemented with vitamin pills supplement something He supplements his income by giving private lessons.
  2. supplementation
     
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  3. NAmE//ˌsʌpləmɛnˈteɪʃn//
     
    noun [uncountable]
See the Oxford Advanced Learner's Dictionary entry: supplement