Definition of Teletypesetter
: an apparatus for the automatic operation of a keyboard slugcasting machine consisting essentially of a separate keyboard that perforates a tape which is fed either into an attachment to the slugcasting machine or into a sender that transmits electrical impulses telegraphically to any number of reperforators with the perforated tape causing the slugcasting machine to set type by automatic operation of the keyboard —formerly a U.S. registered trademark
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