[ foh-lee-oh ]
/ ˈfoʊ liˌoʊ /

noun, plural fo·li·os.


pertaining to or having the format of a folio: a folio volume.

verb (used with object), fo·li·oed, fo·li·o·ing.

to number each leaf or page of.
Law. to mark each folio in (a pleading or the like) with the proper number.

Origin of folio

1525–35; < Latin foliō (orig. in phrase in foliō in a leaf, sheet), ablative of folium folium

Definition for folio (2 of 2)

folio verso
[ foh-lee-oh vur-soh; Latin foh-lee-oh wer-soh ]
/ ˈfoʊ liˌoʊ ˈvɜr soʊ; Latin ˈfoʊ liˌoʊ ˈwɛr soʊ /


the back of the page; verso (opposed to folio recto).

Origin of folio verso

From Latin Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for folio

British Dictionary definitions for folio

/ (ˈfəʊlɪəʊ) /

noun plural -lios


relating to or having the format of a folioa folio edition

verb -lios, -lioing or -lioed

(tr) to number the leaves of (a book) consecutively

Word Origin for folio

C16: from Latin phrase in foliō in a leaf, from folium leaf
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