Definition of duplex noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈdjuːpleks//
    ; NAmE NAmE//ˈduːpleks//
    (especially North American English) Types of home
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  1. 1a building divided into two separate homes See related entries: Types of home
  2. 2a flat/apartment with rooms on two floors See related entries: Types of home
  3. Word Originmid 16th cent. (as an adjective): from Latin duplex, duplic-, from duo ‘two’ + plicare ‘to fold’. The noun dates from the 1920s.
See the Oxford Advanced American Dictionary entry: duplex