Duodecimo

noun

noun ·Uncommon ·Advanced level

Definitions

Noun
  1. 1
    A size of paper, so called because it is originally made by folding and cutting a single sheet from a printing press into 12 leaves; (5 by 7¾ inches): 6.5 to 7.5 inches high, approximately 4.5 inches wide.
  2. 2
    A sheet or page of that size.
  3. 3
    A book having pages of that size.

    "In recent years, I have taken to reading while walking. I believe the Romantics were guilty of such behavior; a duodecimo was small enough to fit into a jacket pocket."

Synonyms

All synonyms
12mo12ºtwelvemobabybantambanty

Example

More examples

"In recent years, I have taken to reading while walking. I believe the Romantics were guilty of such behavior; a duodecimo was small enough to fit into a jacket pocket."

Etymology

Latin ablative of duodecimus (“twelfth”) (from duodecim 'twelve', from duo 'two' + decem 'ten')

Related phrases

printing press

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.