Definition of octodecimo in English:


Syllabification: oc·to·dec·i·mo
Pronunciation: /ˌäktōˈdesəmō

noun (plural octodecimos)

1A size of book page that results from the folding of each printed sheet into eighteen leaves (36 pages).
1.1A book of octodecimo size.
More example sentences
  • Rawles describes an octodecimo printed by Wechel and owned by a Scot.


mid 19th century: from Latin in octodecimo 'in an eighteenth', from octodecimus 'eighteenth'.

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