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Definition of duplex

duplex

/ˈduː.plɛks/
du · plex

Plural:duplexes
•
Past Simple:duplexed
•
Past Participle:duplexed
•
Present Participle:duplexing
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duplex Lexical Profile

duplex Game Scores & Validity

• noun

1

North American A residential building divided into two separate, self-contained living units, often side-by-side or on different floors.

Example

"They purchased a brick duplex in the suburbs so they could live in one unit and rent out the other."


2

A telecommunications or computing system that allows the transmission of data in two directions simultaneously.

Example

"The network architecture relies on a duplex to handle heavy streams of incoming and outgoing traffic without bottlenecks."


3

A double-stranded molecule of DNA or RNA.

Example

"The enzyme unwinds the DNA duplex to allow for genetic replication."

• adjective

1

Capable of transmitting and receiving data simultaneously across a communication channel.

Example

"We need a duplex connection to ensure real-time audio and video synchronization during the broadcast."


2

Having two main parts or elements; twofold or double.

Example

"The machine features a duplex mechanism that allows it to operate twice as efficiently."

Synonyms
View all synonyms for duplex

• verb

1

To print on both sides of a sheet of paper automatically.

Example

"The office software is configured to duplex all internal documents in order to save paper."


2

To form a double-stranded molecule from two single complementary strands (especially in genetics).

Example

"During the annealing phase of the experiment, the complementary RNA strands will duplex to form a stable structure."

Word Nuance & Usage

In telecommunications, 'duplex' implies simultaneous two-way communication (full-duplex), which is distinct from 'half-duplex' (two-way, but alternating directions) and 'simplex' (one-way only).

• Rhymes for duplex

Word Origin & Etymology

From Latin 'duplex', meaning 'twofold', derived from 'duo' (two) and 'plicare' (to fold).

Cite this Entry


Wordmom. (2026). Definition of Duplex. In Wordmom Dictionary. Retrieved Oct 17, 2026, from https://wordmom.com/dictionary/duplex
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