genealogy - definition and synonyms

noun 

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/ˌdʒiːniˈælədʒi/
singulargenealogy
pluralgenealogies
  1. 2
    [countable] the history of one family, showing how all the people are related to each other

derived words

genealogical

 

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/ˌdʒiːniəˈlɒdʒɪk(ə)l/
adjective

genealogist

  noun [countable]
singulargenealogist
pluralgenealogists