sixty-fourmo

[ siks-tee-fawr-moh, -fohr- ]
/ ˌsɪks tiˈfɔr moʊ, -ˈfoʊr- /

noun, plural six·ty-four·mos.

a book size (about 2 × 3 inches; 5 × 7 cm) determined by printing on sheets folded to form 64 leaves or 128 pages.
a book of this size. Symbol: 64mo, 64°

adjective

printed, folded, or bound in sixty-fourmo.

Origin of sixty-fourmo

sixty-four + -mo

Words nearby sixty-fourmo

sixty-first, sixty-five, sixty-four, sixty-four thousand dollar question, sixty-four-dollar question, sixty-fourmo, sixty-fourth, sixty-fourth note, sixty-fourth rest, sixty-nine, sixty-ninth

British Dictionary definitions for sixty-fourmo

sixty-fourmo
/ (ˌsɪkstɪˈfɔːməʊ) /

noun plural -mos

a book size resulting from folding a sheet of paper into 64 leaves or 128 pages, each one sixty-fourth the size of the sheet Often written: 64mo, 64°
a book of this size