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
Nelson, 54, has been with KARE-TV since 2003 after working at KSTP-TV, according to her bio.—
Ross Raihala,
Twin Cities,
21 July 2026 As for what’s next, McChord believes bio-tracking is only going to become more prevalent.—
Alexandra York,
Forbes.com,
20 July 2026 Spear has no scientific or public health background, according to her bio.—CNN Money,
16 July 2026 In addition to Lilah, the couple are also parents to son Graham and daughter Violet, per John’s bio at Hill Country Christian School.—
Caroline Blair,
PEOPLE,
15 July 2026 See All Example Sentences for bio