Duplex
/ˈdjuː.plɛks/noun
Having two parts, aspects, or units; especially a building with two separate living units.
Did you know?Duplex comes from Latin duplex, and the same PIE root behind its first half also lives on in everyday words like two, twin, twice, and twelve — proof that ancient number-words still shape modern reality.
Etymological Timeline
Proto-Indo-European
PIE
*dwóh₁
“two”
Latin
Latin
duplex
“twofold; double; having two parts”
Late Latin
Latin
duplex
“double, twofold, folded twice”
Old French
Old French
duple
“double, twofold”
Middle English
English
duplex
“double, twofold; later, a house divided into two units”
Modern English
English
duplex
“a two-unit building or something consisting of two parts”