Definition of PET noun from the Oxford Advanced American Dictionary

     

    PET

     noun
    noun[uncountable]
     
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  1. 1
    NAmE//ˌpi i ˈti//
     
    the abbreviation forpolyethylene terephthalate(an artificial substance used to make materials for packaging food, including plastic drinks bottles)
  2. 2
    NAmE//pɛt//
     
    (medical) the abbreviation forpositron emission tomography(a process that produces an image of your brain or of another part inside your body) a PET scan
See the Oxford Advanced Learner's Dictionary entry: PET