thirty-twomo

[thur-tee-too-moh]
noun, plural thir·ty-two·mos.
  1. a book size of about 3¼ × 5½ inches (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.
adjective
  1. printed, folded, or bound as a thirty-twomo.

Origin of thirty-twomo

First recorded in 1765–75; thirty-two + -mo
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for thirty-twomo

thirty-twomo

noun plural -mos
  1. a book size resulting from folding a sheet of paper into 32 leaves or 64 pagesOften written: 32mo, 32°
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012