Dictionary.com
Thesaurus.com
Synonyms

bio

1 American  
[bahy-oh] / ˈbaɪ oʊ /

noun

plural

bios

  1. biography.

  2. biology.

adjective

  1. biographical.

  2. biological.

    a bio control service using praying mantises to reduce the population of garden pests.
bio- 2 American  

  1. a combining form meaning “life” occurring in loanwords from Greek (biography ); on this model, used in the formation of compound words (bioluminescence ).

bio- 1 British  

combining form

  1. indicating or involving life or living organisms

    biogenesis

    biolysis

  2. indicating a human life or career

    biography

    biopic
"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
bio 2 British  
/ ˈbaɪəʊ /

noun

  1. short for biography

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Usage

What does bio- mean? The combining form bio- is used like a prefix meaning “life.” It is often used in scientific terms, especially in biology.The form bio- comes from Greek bíos, meaning “life.” The Latin cognate of bíos is vīta, “life,” which is the source of words such as vital. Find out more at our entry for vital.What are variants of bio-?When combined with words or word elements that begin with a vowel, bio- becomes bi-, as in biome. Want to know more? Read our Words That Use article for bi-.

Etymology

Origin of bio1

1945–50; by shortening; as adj., independent use of bio-, taken as a free form

Origin of bio-2

Combining form of Greek bíos life; akin to Latin vīvus living, Sanskrit jīvas. See quick

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

As fruit characters like Kiwilo and Mangella couple up, viewers can vote on outcomes via an online form in the creator’s bio.

From The Wall Street Journal • Mar. 27, 2026

But, facing the biggest moment of his sporting life, Frostad produced a near-flawless right nose butter double bio 1620 to post 98.50 -- the highest score of the competition.

From Barron's • Feb. 17, 2026

Jan Leike, a researcher at Anthropic who formerly worked at OpenAI and DeepMind, according to his X bio and website, left OpenAI in 2024 — also while sounding alarms over AI safety concerns.

From MarketWatch • Feb. 12, 2026

In her bio, Klobuchar describes herself as a veteran bipartisan lawmaker willing to work across the aisle.

From BBC • Jan. 29, 2026

I kept our bio conversations as brief and boring as possible.

From "A Very Large Expanse of Sea" by Tahereh Mafi

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.