quadruplex

quadruplex [ˈkwɒdrʊˌplɛks kwɒˈdruːplɛks]

adj

1. consisting of four parts; fourfold

2. (Electronics) denoting a type of television video tape recorder having four transversely rotating heads

[from Latin, from quadru- (see quadri-) + -plex -fold]

quadruplicity  [ˌkwɒdrʊˈplɪsɪtɪ] n

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"