folio

US /ˈfoʊ.li.oʊ/
UK /ˈfoʊ.li.oʊ/
"folio" picture
1.

對開頁, 頁

a leaf of a manuscript or book, numbered only on the front (recto) side

:
The ancient manuscript had several missing folios.
這份古老的手稿有幾頁對開頁缺失。
Each folio was carefully preserved to prevent damage.
每一頁對開頁都經過精心保存以防止損壞。
2.

對開本, 大開本

a book or manuscript of the largest size, made from sheets of paper folded once

:
The library acquired a rare first edition folio.
圖書館購得一本珍貴的初版對開本
Shakespeare's First Folio is a collection of his plays.
莎士比亞的《第一對開本》是他的戲劇集。