folio

[ foh-lee-oh ]

noun

, plural fo·li·os.

1. a sheet of paper folded once to make two leaves, or four pages, of a book or manuscript.
2. a volume having pages of the largest size, formerly made from such a sheet.
3. a leaf of a manuscript or book numbered only on the front side.
4. a case that, when closed, covers and protects both the screen and the back panel of a mobile device, as a tablet or smartphone.
5. Printing.
   1. (in a book) the number of each page.
   2. (in a newspaper) the number of each page together with the date and the name of the newspaper.
6. Bookkeeping. a page of an account book or a left-hand page and a right-hand page facing each other and having the same serial number.
7. Law. a certain number of words, in the U.S. generally 100, taken as a unit for computing the length of a document.

adjective

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

   a folio volume.

verb (used with object)

, fo·li·oed, fo·li·o·ing.

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

folio

/ ˈfəʊlɪəʊ /

noun

1. a sheet of paper folded in half to make two leaves for a book or manuscript
2. a book or manuscript of the largest common size made up of such sheets
3. a leaf of paper or parchment numbered on the front side only
4. a page number in a book
5. law a unit of measurement of the length of legal documents, determined by the number of words, generally 72 or 90 in Britain and 100 in the US
6. a collection of related material

adjective

1. relating to or having the format of a folio

   a folio edition

verb

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

Word History and Origins

Origin of folio¹

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

Word History and Origins

Origin of folio¹

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

Related Words

• album
• booklet
• brochure
• copy
• dictionary
• edition
• essay
• fiction
• magazine
• manual
• novel
• pamphlet
• paperback
• publication
• text
• textbook
• tome
• volume
• work
• writing