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

Definition of octodecimo in English:

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.
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'.

Words that rhyme with octodecimo

duodecimo, sextodecimo

Definition of octodecimo in:

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a narrow valley, especially in Scotland or Ireland