DICT.TW Dictionary Taiwan

 oc·ta·vo /ɑkˈte(ˌ)vo, ˈtɑ-/
 八開紙,八開本

 Oc·ta·vo n.;pl. Octavos   A book composed of sheets each of which is folded into eight leaves; hence, indicating more or less definitely a size of book so made; -- usually written 8vo or 8°.

 Oc·ta·vo, a. Having eight leaves to a sheet; as, an octavo form, book, leaf, size, etc.
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 octavo
      n : the size of a book whose pages are made by folding a sheet
          of paper three times to form eight leaves [syn: eightvo,
           8vo]