IPA: //baɪˈɒɡrəfi//
KK: /baɪˈɑːɡrəfi/
A written account that tells the story of someone's life, including important events and experiences.
She wrote a biography about a famous scientist.
Biography → It is formed from "bio-" (from Greek "bios", meaning life) and "graphy" (from Greek "grapho", meaning to write). The word "biography" refers to the written account of someone's life.
Think of 'life' ('bio-') being 'written' ('graphy') — that's why a biography is a written account of someone's life.