quadruplex

From Latin quadruplex (“fourfold, quadruple”), from quattuor (“four”) + plico (“fold”).

quadruplex (not comparable)

1. Having four components.
2. Of or relating to a system in telegraphy by which four messages (two in each direction) can be sent on one wire simultaneously.
3. Of or relating to an early videotape format with four magnetic record/reproduce heads mounted on a headwheel spinning transversely across the tape.

quadruplex (countable and uncountable, plural quadruplexes)

1. (countable) A quadruplex system.
   • 1905 August 12, Electrical World and Engineer, volume XLVI, number 7, New York, N.Y., page 256, column 1:

     The Western Union office is equipped with four quadruplexes, three duplexes and eleven single loops, besides special private loops in the Japanese and Russian suites, where direct communication will be maintained with the Atlantic cables at Heart’s Content, Newfoundland via Canso, and also with the Western Union offices in New York, whence the Japanese diplomatic matter will be sent via land lines to San Francisco over a direct circuit.

2. (uncountable) Clipping of quadruplex videotape, an early type of videotape with four magnetic record/reproduce heads mounted on a headwheel spinning transversely across the tape.

• G-quadruplex

quadruplex (third-person singular simple present quadruplexes, present participle quadruplexing, simple past and past participle quadruplexed)

1. (transitive) To make quadruplex.

From quattuor (“four”) +‎ -plex (“-fold”).

• (Classical Latin) IPA^(key): /ˈkʷa.dru.pleks/, [ˈkʷäd̪rʊpɫ̪ɛks̠]
• (modern Italianate Ecclesiastical) IPA^(key): /ˈkwa.dru.pleks/, [ˈkwäːd̪rupleks]

quadruplex (genitive quadruplicis, adverb quadrupliciter); third-declension one-termination adjective

1. fourfold, quadruple

Third-declension one-termination adjective.

quadruplex n (genitive quadruplicis); third declension

1. a fourfold amount

Third-declension noun (neuter, imparisyllabic non-i-stem).

• quadruplicātiō
• quadruplicātō
• quadruplicō
• quadruplō
• quadruplus

• English: quadruplex

• “quadruplex”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• “quadruplex”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• quadruplex in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.