folio
UK /ˈfəʊlɪəʊ/ · US /ˈfoʊliˌoʊ/ noun, verb
Forms folios folioing folioed
- noun A leaf of a book or manuscript.
- noun A page of a book, that is, one side of a leaf of a book.
- noun A page number. The even folios are on the left-hand pages and the odd folios on the right-hand pages.
- noun A sheet of paper folded in half.
- noun A book made of sheets of paper each folded in half (two leaves or four pages to the sheet); hence, a book of the largest kind, exceeding 30 centimetres in height. “A rare copy of Shakespeare’s First Folio.”
- noun A wrapper for loose papers.
- noun (accounting) A page in an account book; sometimes, two opposite pages bearing the same serial number.
- noun (computing) A protective case with a flap that folds to cover the screen of a mobile device.
- verb (transitive) To put a serial number on (a folio or page, or on all the folios or pages of a book); to foliate, to page.
Synonyms
Etymology
From Middle English folio (“leaf of a book”), borrowed from Medieval Latin foliō, Late Latin foliō, Latin foliō, the ablative singular form of Late Latin folium (“leaf or sheet of paper”), Latin folium (“leaf of a plant”), ultimately from Proto-Indo-European *bʰleh₃- (“bloom, flower”). Doublet of foil and folium, and distantly related to phyllo and phyllon.
Senses 1, 2, 3.1, 5, and 6 relating to a leaf or page are derived from Medieval Latin foliō in references; sense 5 (“page in an account book”) may be derived from Italian foglio (“rectangular sheet of paper”), from Latin folium. Senses 3.2 and 3.3 relating to a paper size are from Italian in foglio or its etymon Latin in foliō.
Webster’s 1913
- noun A leaf of a book or manuscript.
- noun A sheet of paper once folded.
- verb To put a serial number on each folio or page of (a book); to page.
- adjective Formed of sheets each folded once, making two leaves, or four pages; as, a folio volume. See Folio, n., 3.
Etymology [Ablative of L. folium leaf. See 4th Foil.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “folio”, CC BY-SA 4.0. Details