/therr"tee tooh"moh/ , n. , pl. thirty-twomos , adj.
n.
1. a book size of about 3 1 / 4 × 5 1 / 2 in. (8.3 × 14 cm), determined by printing on sheets that are folded to form 32 leaves or 64 pages. Symbol: 32mo, 32°
2. a book of this size.
adj.
3. printed, folded, or bound as a thirty-twomo.
[ 1765-75; THIRTY-TWO + -MO ]