See Also: octodecimo(medicine)
octodecimo(dictionary)

octodecimo (iou)



octodecimo noun. Pl. -os. M19.
[Latin (in) octodecimo in an eighteenth (sc. of a sheet), from octodecimus eighteenth.]
A size of book or paper in which each leaf is one-eighteenth of a standard printing-sheet. Also, a book or page of this size.