(graph theory, less commonly) A setV (as before), taken together with a multisetE, each of whose elements is a cardinality-twosubset ofV.
(historical,printing) A combinedrotarytypesetting andprintingmachine foroffice use. Thetype is transferred semi-automatically by means of keys from a type-supplydrum to a printing drum. The printing may be done by means of an inkedribbon to print "typewritten" letters, or directly from inked type or astereotypeplate, as in a printing press.