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quadruplex

 

a.

[L., from quattuor four + plicare to fold.]
Fourfold; folded or doubled twice.

Quadruplex system (Electric Telegraph), a system by which four messages, two in each direction, may be sent simultaneously over the wire.


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quadruplicate
telegraph (mechanical device – in communication)
Thomas Alva Edison (American inventor)

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Copyrights:

Webster's Unabridged Dictionary. Webster 1913 Dictionary edited by Patrick J. Cassidy  Read more

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