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Definition of ontology noun from the Oxford Advanced American Dictionary

     

    ontology

     noun
    noun
    NAmE//ɑnˈtɑlədʒi//
     
     
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  1. 1[uncountable] a branch of philosophy that deals with the nature of existence
  2. 2 [countable] (computing) a list of concepts and categories in a subject area that shows the relationships between them a guide to creating a marketing ontology biomedical ontologies
ontological
 
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NAmE//ˌɑntəˈlɑdʒɪkl//
 
adjective
See the Oxford Advanced Learner's Dictionary entry: ontology