A written account of a person's life and achievements (usually written by someone else; an autobiography is written by the person themselves).
彼女は歴史上の人物の伝記をたくさん読んでいる。
She has read many biographies of historical figures.
その伝記映画は作家の若い頃を中心に描いている。
The biographical film focuses on the writer's younger years.
偉人の伝記を読むと、その時代の社会がよくわかる。
Reading a great person's biography helps you understand the society of that era.