plural folios
1
a
: a leaf especially of a manuscript or book
b
: a leaf number
c
: a page number
d
: an identifying reference in accounting used in posting
2
a
: a sheet of paper folded once
b
: a case or folder for loose papers
3
a
: the size of a piece of paper cut two from a sheet
also
: paper or a page of this size
b
: a book printed on folio pages
c
: a book of the largest size
4
: a certain number of words taken as a unit or division in a document for purposes of measurement or reference
folioed; folioing; folios
: to put a serial number on each leaf or page of
Examples of folio in a Sentence
Recent Examples on the Web
Lorraine Berry, Los Angeles Times, 26 Apr. 2025
In Medieval Latin, folio (ablative of folium) was used to refer to a leaf of paper.
—Erik Kain, Forbes.com, 21 May 2025
The magic keyboard folio turns your iPad into a fully functioning laptop and detaches and attaches with a simple click.
—Christopher Murray
May Earn A Commission If You Buy Through Our Referral Links. This Content Was Created By A Team That Works Independently From The Fox Newsroom., FOXNews.com, 20 May 2025
Unlike most folio cases, the cover flap doesn't fold at the back.
—Julian Chokkattu, WIRED, 28 Feb. 2025
See All Example Sentences for folio
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Noun
Sotheby’s has announced that a complete set of all four folios will be auctioned on May 23rd.
—Lorraine Berry, Los Angeles Times, 26 Apr. 2025
In Medieval Latin, folio (ablative of folium) was used to refer to a leaf of paper.
—Erik Kain, Forbes.com, 21 May 2025
The magic keyboard folio turns your iPad into a fully functioning laptop and detaches and attaches with a simple click.
—Christopher Murray
May Earn A Commission If You Buy Through Our Referral Links. This Content Was Created By A Team That Works Independently From The Fox Newsroom., FOXNews.com, 20 May 2025
Unlike most folio cases, the cover flap doesn't fold at the back.
—Julian Chokkattu, WIRED, 28 Feb. 2025
See All Example Sentences for folio
Cite this Entry
“Folio.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/folio. Accessed 13 Jul. 2025.
Copy CitationLegal Definition
folio
noun
fo·lio
ˈfō-lē-ˌō 
: a certain number of words taken as a unit or division in a document for purposes of measurement or reference
Note: A folio by statutory provision generally consists of 100 words.
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