n. (pl. s) 1 leaf of paper etc., esp. numbered only on the front. 2 sheet of paper folded once making two leaves of a book. 3 book of such sheets. adj. (of a book) made of folios, of the
n. (pl. s) 1 leaf of paper etc., esp. numbered only on the front. 2 sheet of paper folded once making two leaves of a book. 3 book of such sheets. adj. (of a book) made of folios, of the