sixmo(redirected from 6MO)
Also found in: Acronyms.
n, pl -mos
1. (Printing, Lithography & Bookbinding) Also called: sexto a book size resulting from folding a sheet of paper into six leaves or twelve pages, each one sixth the size of the sheet. Often written: 6mo or 6°
2. (Printing, Lithography & Bookbinding) a book of this size