Folio /(?)/

pl. Folios

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 (four pages to the sheet); hence, a book of the largest kind. See Note under Paper.
4. The page number. The even folios are on the left-hand pages and the odd folios on the right-hand. (Print.)
5. A page of a book; (Bookkeeping) a page in an account book; sometimes, two opposite pages bearing the same serial number. (Bookkeeping)
6. 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. (Law)

1. To put a serial number on each folio or page of (a book); to page.

1. Formed of sheets each folded once, making two leaves, or four pages; as, a folio volume. See Folio, n., 3.