[ kwod-roo-pleks, kwo-droo-pleks ]
/ ˈkwɒd rʊˌplɛks, kwɒˈdru plɛks /


fourfold; quadruple.
noting or pertaining to a system of telegraphy by which four messages may be transmitted simultaneously over one wire or communications channel.

Origin of quadruplex

From Latin, dating back to 1870–75; see origin at quadru-, -plex
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for quadruplex

British Dictionary definitions for quadruplex

/ (ˈkwɒdrʊˌplɛks, kwɒˈdruːplɛks) /


consisting of four parts; fourfold
denoting a type of television video tape recorder having four transversely rotating heads

Derived forms of quadruplex

quadruplicity (ˌkwɒdrʊˈplɪsɪtɪ), noun

Word Origin for quadruplex

C19: from Latin, from quadru- (see quadri-) + -plex -fold
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012