4to

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  4to \4to\ n.
     1. the size of a book whose pages are made by folding a sheet
        of paper twice to form four leaves.
  
     Syn: quarto
          [WordNet 1.5]



From WordNet (r) 2.0 [wn]:

  4to
       n : the size of a book whose pages are made by folding a sheet
           of paper twice to form four leaves [syn: {quarto}]