Definition of folio in English:

folio

Syllabification: fo·li·o
Pronunciation: /ˈfōlēˌō
 
/

noun (plural folios)

1An individual leaf of paper or parchment, numbered on the recto or front side only, occurring either loose as one of a series or forming part of a bound volume.
More example sentences
  • ‘Restored and put under glass, the folios could be gingerly handled, and it was possible to photograph all the pages,’ he said.
  • The folios will debut at Artexpo New York along with a limited-edition giclee print of ‘Moon Rider.’
  • Today it has been pulled apart, the folios bound to a cardboard binder.
1.1 Printing The page number in a printed book.
More example sentences
  • The specific piece of evidence is an entry given within the book, on the front of folio 327, dating from 1635.
  • The combination of second-person speech and frontal gaze of the princess on folio 3v indicates to him that the book was expressly produced for her young foreign eyes.
  • The earlier set of ordinances are on folios 17-19, the original custumal on ff.20-49, and the later set of ordinances on ff.74-77.
1.2A sheet of paper folded once to form two leaves (four pages) of a book.
More example sentences
  • Once the pages were finished they were folded into the folios and placed up to eight pages in depth.
  • His own grammar fills 13 double-column folio pages in his two-volume dictionary.
  • The presence of empty, but ruled, folios at the end of the volume suggests that FVB was a work in progress.
1.3A size of book made up of folio sheets of paper: copies in folio
More example sentences
  • Wadum suggests that some of the five books in folio and 25 other books might have been manuals such as those cited by Swillens.
  • And that's without me looking at the folio size books.
  • These were engraved in two sizes: folio, and a smaller series as book illustrations.
1.4A book or manuscript made up of folio sheets of paper; a volume of the largest standard size: old vellum-bound folios [as modifier]: a folio volume
More example sentences
  • Up to now it is more than a hundred folios of manuscript.
  • The desktop itself was lost beneath teetering stacks of leather-bound volumes and slim folios that formed a parapet around the edges of the desk.
  • She dedicated her lavish folio volume, in large print, to her brother-in-law, Sir Charles Cavendish, in gratitude.

Origin

late Middle English: from Latin, ablative of folium 'leaf', in medieval Latin used in references to mean 'on leaf so-and-so'. The original sense of in folio (from Italian in foglio) was 'in the form of a full-sized sheet or leaf folded once' (designating the largest size of book).

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