Lit. one chou 丁. One folded page of a printed 
book during the Edo period. Because only one side of a sheet was printed the sheet 
was then folded in half with the printed surface outwards. The loose edges of 
the folded sheets were sewn together at the spine leaving the fold uncut on the 
outside, which might be considered the reverse of Western practice. The number 
of chou in a traditional printed book was thus equal to the number of folded 
sheets of paper assembled before binding.    |