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quadruplex

adjective
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quad·​ru·​plex | \ ˈkwädrəˌpleks \

Definition of quadruplex

: being or relating to a system of telegraphy by which two messages in each direction may be sent simultaneously over one wire

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History and Etymology for quadruplex

Latin quadruplic-, quadruplex fourfold, from quadri- + -plic-, -plex -fold

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“Quadruplex.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/quadruplex. Accessed 28 January 2020.

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