Definition of semi noun from the Oxford Advanced Learner's Dictionary

     

    semi

     noun
    noun
    BrE BrE//ˈsemi//
     
    ; NAmE NAmE//ˈsemi//
     
    (pl. semis) Types of home
     
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  1. 1(British English, informal) a semi-detached house (= one that is joined to another house by one shared wall) suburban semis See related entries: Types of home
  2. 2(North American English) = semi-trailer
  3. 3= semi-final
  4. Word Origin early 20th cent.: abbreviation.
See the Oxford Advanced American Dictionary entry: semi