Definition of autobiography noun from the Oxford Advanced American Dictionary

 

autobiography

 noun
noun
NAmE//ˌɔt̮əbaɪˈɑɡrəfi//
 
[countable, uncountable](pl. autobiographies)
 
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the story of a person's life, written by that person; this type of writing compare biography
autobiographical
 
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NAmE//ˌɔt̮əˌbaɪəˈɡræfɪkl//
 
adjective an autobiographical novel (= one that contains many of the writer's own experiences)
See the Oxford Advanced Learner's Dictionary entry: autobiography