In a library, the word biography refers both to a kind of book and to a section where books of that kind are found. Each biography tells the story of a real person's life. A biography may be about someone who lived long ago, recently, or even someone who is still living, though in the last case it must necessarily be incomplete. The term autobiography refers to a biography written by the person it's about. Autobiographies are of course also necessarily incomplete.
Sometimes biographies are significantly shorter than a book—something anyone who's been asked to submit a biography for, say, a conference or a community newsletter will be glad to know. Often the word in these contexts is shortened to bio, a term that can be both a synonym of biography and a term for what is actually a biographical sketch: a brief description of a person's life. These kinds of biographies—bios—vary, but many times they are only a few sentences long. Looking at bios that have been used in the same context can be a useful guide in determining what to put in your own.
Noun
you can read a bio of the author on her home page
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Noun
The thermal bathing retreat, which opened in September 2025, offers a multitude of hydrotherapy experiences, from a Kneipp walk and hydro pool to Finnish and bio saunas.—Jen Murphy, Condé Nast Traveler, 15 May 2026 In such a context, an Adriano bio is almost inevitable.—John Hopewell, Variety, 15 May 2026 Bassett married his wife, Angela, in December 1989, and the couple had five children together, according to Bassett's bio page on the church's website.—Julia Gomez, USA Today, 12 May 2026 Roberson did not play with the Blue Devils during the 2024–25 basketball season due to injury, according to her Duke women's basketball bio.—Bailey Richards, PEOPLE, 10 May 2026 See All Example Sentences for bio