Definition of systemic adjective from the Oxford Advanced Learner's Dictionary



    BrE BrE//sɪˈstemɪk//
    ; NAmE NAmE//sɪˈstemɪk//
    ; BrE BrE//sɪˈstiːmɪk//
    ; NAmE NAmE//sɪˈstiːmɪk//
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  1. 1affecting or connected with the whole of something, especially the human body a systemic disease
  2. 2systemic chemicals or drugs that are used to treat diseases in plants or animals enter the body of the plant or animal and spread to all parts of it systemic weedkillers
  3. Word Originearly 19th cent.: formed irregularly from system + -ic.
See the Oxford Advanced American Dictionary entry: systemic