Autobiography is the English noun for a book that acts as an account of a person's life and the literal work is done by that person. This is unlike a biography which is an account of a person's life written by another person.
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what does autobiography mean
[aw-tuh-bahy-og-ruh-fee, -bee-, aw-toh-]
NOUN [PLURAL AU·TO·BI·OG·RA·PHIES.]
a history of a person's life written or told by that person.
The word autobiography refers to the biography of a person usually written by that person. This is usually an account of the person's life, series and events which have been recorded or written by him or her.