1. A large sheet of paper folded once in the middle, making two leaves or four pages of a book or manuscript.
2. A book or manuscript of the largest common size, usually about 38 centimeters (15 inches) in height, consisting of such folded sheets.
3. A leaf of a book numbered only on the front side.
4. A number on such a leaf.
5. A page number.
6. accounting A page in a ledger or two facing pages that are assigned a single number.
7. law A specific number of words used as a unit for measuring the length of the text of a document.
8. to number consecutively the pages or leaves of (a book, for example).

1. A leaf of a book or manuscript.
2. A sheet of paper once folded.
3. A book made of sheets of paper each folded once (two leaves or four pages to the sheet); hence, a book of the largest kind, exceeding 30 cm in height.
4. the page number. the even folios are on the left-hand pages and the odd folios on the right-hand.
5. A page of a book.
6. a page in an account book; sometimes, two opposite pages bearing the same serial number.
7. A leaf containing a certain number of words, hence, a certain number of words in a writing, as in england, in law proceedings 72, and in chancery, 90; in new york, 100 words.

1. formed of sheets each folded once, making two leaves, or four pages. see folio, n., 3.
2. A leaf of a book or manuscript.
3. A sheet of paper once folded.
4. A book made of sheets of paper each folded once (four pages to the sheet); hence, a book of the largest kind. see note under paper.
5. the page number. the even folios are on the left-hand pages and the odd folios on the right-hand.
6. A page of a book; (bookkeeping) a page in an account book; sometimes, two opposite pages bearing the same serial number.
7. A leaf containing a certain number of words, hence, a certain number of words in a writing, as in england, in law proceedings 72, and in chancery, 90; in new york, 100 words.
8. to put a serial number on each folio or page of (a book); to page.

1. A sheet of paper folded once, usually through the shorter diameter, so as to consist of two equal leaves.
2. A book or other publication, or a blank book, etc., consisting of sheets or of a single sheet folded once.
3. the size of such a book, etc.: as, an edition of a work in folio. abbreviated fol.: as, 3 vols.
4. one of several sizes of paper adapted for folding once into well-proportioned leaves, whether intended for such use or not, distinguished by specific names.
5. in bookkeeping, a page of an account-book, or both the right- and left-hand pages numbered with the same figure.
6. in printing, the number of a page, inserted at top or bottom.
7. in law, a certain number of words taken as a basis for computing the length of a document.
8. A wrapper or case for loose papers, sheet music, engravings, etc.: as, a music-folio.
9. in abundance; in great style (nares); but, perhaps, in separate leaves; in flakes or fragments.
10. pertaining to or having the form of a folio; folded or adapted for folding once; consisting of leaves formed by one folding: as, a sheet or book of folio size; a folio sheet, page, newspaper, or book.
11. in printing, to number the pages of, as a book or periodical; page; paginate.
12. in law-copying, to mark with its proper figure the end of every folio in; in law-printing, to mark with its proper figure the space that should be occupied by a folio in. see folio, n., 7.

1. a sheet of any written or printed material (especially in a manuscript or book)
2. a book (or manuscript) consisting of large sheets of paper folded in the middle to make two leaves or four pages
3. the system of numbering pages