duplex

1 of 3

adjective

du·​plex ˈdü-ˌpleks How to pronounce duplex (audio)
 also  ˈdyü-
1
a
: having two principal elements or parts : double, twofold
b
: having two complementary polynucleotide strands of DNA or of DNA and RNA
2
: allowing telecommunication in opposite directions simultaneously

duplex

2 of 3

verb

duplexed; duplexing; duplexes

transitive verb

: to make duplex

duplex

3 of 3

noun

: something duplex: such as
a
: a 2-family house
c
: a duplex molecule of DNA or of RNA and DNA

Did you know?

Duplex can describe a confusing variety of things, depending on the technical field. Most of us use it as a noun: a duplex can be either a two-family house or a two-story apartment. In computer science and telecommunications, duplex (or full-duplex) communication can go in both directions at once, while half-duplex communication can go only one way at a time. In other areas, just translate duplex as "double" and see if the sentence makes sense.

Examples of duplex in a Sentence

Adjective a duplex apartment with all of the bedrooms on the second floor Noun We live in the brick duplex.
Recent Examples on the Web
Adjective
This duplex-style unit is on the top two floors of a 2000 midrise near the Ruggles Orange Line station, Northeastern University, and the Kings’ first home together as a married couple on Northampton Street. Jon Gorey, BostonGlobe.com, 20 Jan. 2023 The project consists of 10 duplex-style homes of 1,300 square feet apiece, with three bedrooms, attached two-car garages and private yards. Joe Tash, San Diego Union-Tribune, 25 Dec. 2022 The incident occurred shortly after 5 p.m. at a duplex home on Washington Avenue near Lincoln Avenue, said El Cajon police Lt. Tammy Murgareporter, San Diego Union-Tribune, 24 Nov. 2022 But what exactly qualifies as a duplex home, and is owning one as straightforward as owning a single-household residence? Kristine Gill, Better Homes & Gardens, 2 Sep. 2022 The duplex home of renowned art collector, dealer, interior designer and philanthropist Hester Diamond recently listed for $19.5 million. Emma Reynolds, Robb Report, 18 May 2022 For the penthouses, Herzog and de Meuron worked alongside structural engineers AKT to create the unique features within each duplex penthouse and interior designer Tom Dixon’s Design Research Studio to create lovely homes. Emma Reynolds, Robb Report, 17 Nov. 2022 The zone allows the development of single-family homes and duplex-style homes in a condensed area on the property. Scott Turner | Sturner@al.com, al, 3 July 2022 The Hong Kong hotel group is selling a duplex penthouse inside the Residences at the Mandarin Oriental, Honolulu. Demetrius Simms, Robb Report, 27 July 2022
Verb
Also part of the kit are a lightweight battery, a duplexing antenna that allows both data transmission and wireless power charging, and sensors, none more than 6 millimeters in diameter. IEEE Spectrum, 14 Jan. 2024
Noun
Anderson, 33, owns a brick duplex on South 37th Street, near West Oklahoma Avenue, which was searched by law enforcement last week. Journal Sentinel Staff, Journal Sentinel, 11 Apr. 2024 The remaining parts of the street can be populated with single-family homes and duplexes. Chase Jordan, Charlotte Observer, 9 Apr. 2024 Then on June 18, just a few days later, Kaylor could be seen looking around the duplex not long before the shooting. Emma Epperly, Idaho Statesman, 25 Mar. 2024 In Wall's case, a teacher housing nonprofit stepped in, renting him a unit in a duplex built for teachers. USA TODAY, 14 Mar. 2024 Keane is currently deploying that strategy herself, after a recent move to a rental duplex in Teaneck, N.J., with her husband and toddler. Rachel Kurzius, Washington Post, 22 Feb. 2024 Two residences, each three bedroom unit at 2,400 to 2,800 square feet with two-car garages and two-car driveways, would share each of the 28 two-story duplex buildings. Karie Angell Luc, Chicago Tribune, 29 Jan. 2024 Miller said the city tries to keep the sale prices of the homes, including larger houses such as duplexes, between $100,000 and $180,000, keeping them affordable for working families. Karl Ebert, Journal Sentinel, 22 Mar. 2024 Now, its four duplex invite-only penthouses, called Skyvillas, have been refreshed. David Morris, Travel + Leisure, 15 Mar. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'duplex.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Adjective

Latin, from duo two + -plex -fold — more at two, -fold

First Known Use

Adjective

1567, in the meaning defined at sense 1a

Verb

1833, in the meaning defined above

Noun

1922, in the meaning defined above

Time Traveler
The first known use of duplex was in 1567

Dictionary Entries Near duplex

Cite this Entry

“Duplex.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/duplex. Accessed 18 Apr. 2024.

Kids Definition

duplex

1 of 2 adjective
du·​plex ˈd(y)ü-ˌpleks How to pronounce duplex (audio)
1
: being or consisting of two parts : twofold
2
: allowing communication at a distance (as by telephone or television) in opposite directions at the same time

duplex

2 of 2 noun
: something duplex: as
a
: a two-family house
b
: an apartment with rooms on two floors

Medical Definition

duplex

noun
du·​plex ˈd(y)ü-ˌpleks How to pronounce duplex (audio)
: a molecule having two complementary polynucleotide strands of DNA or of DNA and RNA
duplex adjective

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