Search Result for "quadruplex": 
Wordnet 3.0

ADJECTIVE (1)

1. having four units or components;
- Example: "quadruple rhythm has four beats per measure"
- Example: "quadruplex wire"
[syn: quadruple, quadruplicate, quadruplex, fourfold, four-fold]

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3 definitions retrieved:

The Collaborative International Dictionary of English v.0.48:

Quadruplex \Quad"ru*plex\, a. [L., from quattuor four + plicare to fold.] Fourfold; folded or doubled twice. [1913 Webster] Quadruplex system (Electric Telegraph), a system by which four messages, two in each direction, may be sent simultaneously over the wire. [1913 Webster]
WordNet (r) 3.0 (2006):

quadruplex adj 1: having four units or components; "quadruple rhythm has four beats per measure"; "quadruplex wire" [syn: quadruple, quadruplicate, quadruplex, fourfold, four-fold]
The Free On-line Dictionary of Computing (18 March 2015):

quadruplex A kind of telegraphy system developed by Thomas A. Edison in the 1870s combining diplex and duplex communications to support simultaneous transmission of two messages in each direction. (2000-04-02)