from The Century Dictionary.
- noun A size of book of which each signature is made up of 18 folded leaves, making 36 pages to the signature: commonly written 18mo.
- Of the size of a sheet folded into eighteen leaves; consisting of such sheets: as, an eighteenmo page or book.
from the GNU version of the Collaborative International Dictionary of English.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
octodecimo(as a paper size in printing).
from The American Heritage® Dictionary of the English Language, 4th Edition
[From 18mo, abbr. of octodecimo.]
Sorry, no example sentences found.