American English

Definition of codex noun from the Oxford Advanced American Dictionary

     

    codex

     noun
    noun
    NAmE//ˈkoʊdɛks//
     
    (pl. codices
    NAmE//ˈkoʊdəsiz//
     
    , NAmE//ˈkɑdəsiz//
     
    or codexes)
     
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  1. 1an ancient text in the form of a book
  2. 2an official list of medicines or chemicals
See the Oxford Advanced Learner's Dictionary entry: codex