DUPLICATE, among lawyers, denotes a copy of
any deed, writing, or account. It is also used for the
second letters-patent, granted by the lord-chancellor
in a case wherein he had before done the same. Also
a second letter written and sent to the same party and
purpose as a former, for fear of the first's miscarriage,
is called a Duplicate.
DUPLICATE Proportion or Ratio. See RATIO.