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
Laurie Thames Pace, who shared the protest poster online Thursday, has been director of group exercises for the YMCA of Greater Charlotte since 2017, her bio shows on Facebook.—Charlotte Observer,
27 June 2026 Antonio went on to build a blended family with Mekevia Hawkins, whose daughter, Diamond Spaulding, competed in track and field at Texas A&M University, according to her bio.—
Samantha Stutsman,
PEOPLE,
26 June 2026 An X-ray laser slashed across the bio-andy.—
Jeff Spry,
Space.com,
26 June 2026 At the time of publication, no mentions of Katseye appear in Manon’s social media bios.—
Elizabeth Gulino,
Allure,
25 June 2026 See All Example Sentences for bio