There are 2 definitions of bio in English:

bio1

Syllabification: bi·o
Pronunciation: /ˈbīō
 
/
informal

noun (plural bios)

A biography or short biographical profile of someone: the latest in a series of unauthorized bios
More example sentences
  • The first two bios in the series are available: Bo Diddley here, Chuck Berry here.
  • But… well, she's either read my books wrong, or she was so busy trying to translate my bio into a series of how-to tips that she never read them at all.
  • I also have several bios / profiles from some of the writers.

adjective

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Biographical: it was excluded from her official bio material
More example sentences
  • He remembered enough of her bio details from the compound records that he could probably track down a phone number.
  • Single-screen text bio sketches of the interviewees are also available.
  • At the top of the list was my PCMag bio information, likely the most searched or viewed URL containing my name.

Origin

1920s: abbreviation.

Definition of bio in:

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Word of the day anastrophe
Pronunciation: əˈnastrəfē
noun
the inversion of the usual order of words...

There are 2 definitions of bio in English:

bio2

Syllabification: bi·o
Pronunciation: /ˈbīō
 
/
informal

noun

US
Biology: I majored in bio and I’m waiting to see about med school
More example sentences
  • We know about immunology; Margaret took her bio class last term!
  • I have been very pleased with my experience as a bio major.
  • I knew that I wanted a psychology minor but I was undecided between a chem or bio major.

adjective

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Biological: studying the effects of bio treatment he’s never met his bio dad
More example sentences
  • Since you are a functioning stepmother, involved in the children's lives and married to the dad, having the same information that the bio mom and dad have helps you help the children.
  • We are in touch with some of her bio siblings
  • Her bio mother gave her up for adoption.

Origin

1940s: abbreviation.

Definition of bio in: