large octavo大八开本
medium octavo中型八开本
royal octavo八开纸
O octavo八开本
quadragesimo-octavo四十八开本
Anno Octavo Annae Reginae安妮女王法令
short slip octavo横八开本
medium frequency transformer octavo八开本
N（名词） a book size resulting from folding a sheet of paper of a specified size to form eight leaves 八开本 (Also called eightvoOften written 8vo, 8°)
demi-octavo