Etymology of the English word duplex
the English word
duplexderived from the Latin word
duplex (twofold, double; divided)
derived from the Late Latin word
plicare (to fold; fold , bend, flex; multiply by X , X-tuple; add together)
derived from the Proto-Indo-European root
*plek-using the Latin prefix
du-derived from the Proto-Indo-European root
*dwo-Date
The earliest known usage of duplex in English dates from the 19th century.
Derivations in English
duplexer,
diplexUsage
Word found in Modern English
