\Print"ing\, n.
The act, art, or practice of impressing letters, characters,
or figures on paper, cloth, or other material; the business
of a printer, including typesetting and presswork, with their
adjuncts; typography; also, the act of producing photographic
prints.
{Block printing}. See under {Block}.
{Printing frame} (Photog.), a shallow box, usually having a
   glass front, in which prints are made by exposure to
   light.
{Printing house}, a printing office.
{Printing ink}, ink used in printing books, newspapers, etc.
   It is composed of lampblack or ivory black mingled with
   linseed or nut oil, made thick by boiling and burning.
   Other ingredients are employed for the finer qualities.
   --Ure.
{Printing office}, a place where books, pamphlets, or
   newspapers, etc., are printed.
{Printing paper}, paper used in the printing of books,
   pamphlets, newspapers, and the like, as distinguished from
   writing paper, wrapping paper, etc.
{Printing press}, a press for printing, books, newspaper,
   handbills, etc.
{Printing wheel}, a wheel with letters or figures on its
   periphery, used in machines for paging or numbering, or in
   ticket-printing machines, typewriters, etc.; a type wheel.