folio Definition

folio
noun folios

1. A leaf of a manuscript, etc, numbered on one side.
2. printing.
A page number in a book.
3a. A body of written work, etc, submitted as part of an examination.

Example: Your English folio must be completed by March
3b. as adj.

Example: Folio pieces must be handwritten
4a. historical
A sheet of paper folded once to make two leaves for a book;
4b. historical
A book of the largest size, composed of such sheets.
5. old use
A folder. Also as adj.
Example: a folio edition

Etymology: 16c: from Latin folium leaf.