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

     

    primer

     noun
    noun
    BrE BrE//ˈpraɪmə(r)//
     
    ; NAmE NAmE//ˈpraɪmər//
     
     
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  1. 1[uncountable, countable] a type of paint that is put on wood, metal, etc. before it is painted to help the paint to stay on the surface
  2. 2[countable]
    BrE BrE//ˈpraɪmə(r)//
     
    ; NAmE NAmE//ˈprɪmər//
     
    (North American English) a book that contains basic instructions The President doesn't need a primer on national security.
  3. 3[countable]
    BrE BrE//ˈpraɪmə(r)//
     
    ; NAmE NAmE//ˈprɪmər//
     
    (old-fashioned) a book for teaching children how to read, or containing basic facts about a school subject
  4. Word Originsenses 2 to 3 late Middle English: from medieval Latin primarius (liber) ‘primary (book)’ and primarium (manuale) ‘primary (manual)’.