Quadruplex

Quad´ru`plex

a.

1.

Fourfold; folded or doubled twice. Quadruplex system (Electric Telegraph) a system by which four messages, two in each direction, may be sent simultaneously over the wire.

Thesaurus

Adj.

1.

quadruplex - having four units or components; "quadruple rhythm has four beats per measure"; "quadruplex wire" four-fold, quadruple, quadruplicate, fourfold multiple - having or involving or consisting of more than one part or entity or individual; "multiple birth"; "multiple ownership"; "made multiple copies of the speech"; "his multiple achievements in public life"; "her multiple personalities"; "a pineapple is a multiple fruit"