QUADRUPLEX

quadruple, quadruplicate, quadruplex, fourfold, four-fold

(adjective) having four units or components; “quadruple rhythm has four beats per measure”; “quadruplex wire”

Source: WordNet® 3.1

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Etymology

Adjective

quadruplex (not comparable)

Having four components.

Of or relating to a system in telegraphy by which four messages (two in each direction) can be sent on one wire simultaneously.

Of or relating to an early videotape format with four magnetic record/reproduce heads mounted on a headwheel spinning transversely across the tape.

Noun

quadruplex (plural quadruplexes)

A quadruplex system.

Verb

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

(transitive) To make quadruplex.

Source: Wiktionary

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Quad"ru*plex, a. Etym: [L., from quattuor four + plicare to fold.]

Definition: 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.

Source: Webster’s Unabridged Dictionary 1913 Edition

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