This is the 4337th most frequent Russian word.
биографию
"Biography."
Used to indicate a written record or book about a person's life.
Я прочитал биографию Льва Толстого.
I read Leo Tolstoy's biography.
Used to connote the field of study concerning famous individuals' lives.
Он изучал биографию великих ученых в университете.
He studied the biography of great scientists at the university.
Used to describe the act of writing one's life story.