duplex apartment


noun

an apartment with rooms on two connected floors.

Origin of duplex apartment

An Americanism dating back to 1935–40
Also called duplex.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for duplex apartment

duplex apartment

noun

US and Canadian an apartment on two floors
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012