- a page size (about 5 by 7 in), of a printer's sheet
- a book with pages of this size
Origin of duodecimoshort for Classical Latin in duodecimo, in twelve: see duodecimal
with pages of this size
- The size (5 by 734 inches) of book pages formed by folding single sheets from a printing press into 12 leaves each.
- A book composed of pages of this size. Also called In both senses also called twelvemo .
Origin of duodecimoLatin (in) duodecimō (in) a twelfth ablative of duodecimus twelfth ; see duodecimal .
Latin ablative of duodecimus (“twelfth”) (from duodecim 'twelve', from duo 'two' + decem 'ten')