ontology

Noun
  1. (computer science) a rigorous and exhaustive organization of some knowledge domain that is usually hierarchical and contains all the relevant entities and their relations (synset 106172695)
    referred to in: computer science, computing - the branch of engineering science that studies (with the aid of computers) computable processes and structures
    is a type of: arrangement, organisation, organization, system - an organized structure for arranging or classifying
  2. The metaphysical study of the nature of being and existence (synset 106172563)
    is a type of: metaphysics - the philosophical study of being and knowing

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