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eighteenmo

[ ey-teen-moh ]

noun

, plural eight·een·mos,


eighteenmo

/ ˈeɪˈtiːnməʊ /

noun

  1. Also calledoctodecimo a book size resulting from folding a sheet of paper into 18 leaves or 36 pages Often written18mo18°
  2. a book of this size
“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
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Word History and Origins

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Example Sentences

Other sizes occasionally used are called “sixteenmo” or “sextodecimo,” “eighteenmo” or “octodecimo,” etc.

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eighteeneighteenth