Standard Lemma guide

duplex

adj · noun · verb · 19 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • General-American: do͞o'plĕks
  • General-American: /ˈdu.plɛks/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • rhymes with -uːplɛks
  • CMU ARPABET: D UW1 P L EH2 K S Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Double; made up of two parts.

Having two floors.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: architecture

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Double; made up of two parts.

Having two units, divisions, suites, or apartments.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: architecture

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adj

Meaning 3

Double; made up of two parts.

Of stainless steel: having a structure containing austenite and ferrite in roughly equal proportions.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: engineering, metallurgy, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

adj

Meaning 4

Bidirectional (in two directions).

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: communications, electrical-engineering, engineering, natural-sciences, physical-sciences, telecommunications

Examples

  • duplex telegraphy

Meaning relationships

Synonyms: none provided

Antonyms: simplex, unidirectional

5

adj

Meaning 5

Having horizons with contrasting textures.

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Qualifier: soil science

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

A house made up of two dwelling units.

Definition source: English Wiktionary via Wiktextract

Usage: Australia, Canada, US

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: semi-detached house

Antonyms: none provided

7

noun

Meaning 7

A dwelling unit with two floors.

Definition source: English Wiktionary via Wiktextract

Usage: US

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

noun

Meaning 8

A cancellation combining a numerical cancellation with a second mark showing time, date, and place of posting.

Definition source: English Wiktionary via Wiktextract

Topics: hobbies, lifestyle, philately

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

9

noun

Meaning 9

A throwing motion where two balls are thrown with one hand at the same time.

Definition source: English Wiktionary via Wiktextract

Topics: arts, hobbies, juggling, lifestyle, performing-arts, sports

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

10

noun

Meaning 10

A double-stranded polynucleotide.

Definition source: English Wiktionary via Wiktextract

Topics: biochemistry, biology, chemistry, microbiology, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

11

noun

Meaning 11

A system of multiple thrust faults bounded above and below by a roof thrust and floor thrust.

Definition source: English Wiktionary via Wiktextract

Topics: geography, geology, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

12

verb

Meaning 12

To make duplex.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

13

verb

Meaning 13

To make into a duplex.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

14

verb

Meaning 14

To make a series of duplex throws.

Definition source: English Wiktionary via Wiktextract

Topics: arts, hobbies, juggling, lifestyle, performing-arts, sports

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

15

adjective satellite

Meaning 15

allowing communication in opposite directions simultaneously

Definition source: Princeton WordNet 3.0

Examples

  • duplex system
  • duplex telephony

Meaning relationships

Synonyms: none provided

Antonyms: none provided

16

adjective satellite

Meaning 16

(used technically of a device or process) having two parts

Definition source: Princeton WordNet 3.0

Examples

  • a duplex transaction

Meaning relationships

Synonyms: none provided

Antonyms: none provided

17

noun

Meaning 17

an apartment having rooms on two floors that are connected by a staircase

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: duplex apartment

Antonyms: none provided

Broader terms: apartment, flat

18

noun

Meaning 18

a house with two units sharing a common wall

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: duplex house, semidetached house

Antonyms: none provided

Broader terms: house

19

verb

Meaning 19

change into a duplex

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: convert

History

Etymology

PIE word *dwóh1 Borrowed from Latin duplex (“double, two-fold”), from duo (“two”) + plico (“fold together”); compare the roots of διπλόος (diplóos, “double”); compare also πλέκω (plékō, “twist, braid”). By surface analysis, duo- + -plex.

Across languages

Translations

38 source translations are retained for this English entry.

  • Bulgarian: двоен (dvoen) — made up of two parts
  • Bulgarian: сдвоен (sdvoen) — made up of two parts
  • Chinese Mandarin: 雙重的 /双重的 — made up of two parts
  • Esperanto: dupleksa — made up of two parts
  • Finnish: kaksiosainen — made up of two parts
  • Greek: διπλός (diplós) — made up of two parts
  • Greek: διμερής (dimerís) — made up of two parts
  • Finnish: kaksikerroksinen — architecture: having two floors
  • Finnish: pari- — architecture: having two units, divisions, suites, or apartments
  • Finnish: duplex- — metallurgy: of stainless steel, containing austenite and ferrite in roughly equal proportions
  • Bulgarian: двупосочен (dvuposočen) — telecommunication: in two directions
  • Chinese Mandarin: 雙向的 /双向的 — telecommunication: in two directions
  • Chinese Mandarin: 雙工 /双工 (shuānggōng) — telecommunication: in two directions
  • Finnish: kaksisuuntainen — telecommunication: in two directions
  • Finnish: dupleksi — telecommunication: in two directions
  • Greek: αμφίδρομος (amfídromos) — telecommunication: in two directions
  • Scottish Gaelic: dà-shlighe — telecommunication: in two directions
  • Spanish: dúplex — telecommunication: in two directions
  • Vietnamese: song công — telecommunication: in two directions
  • Dutch: duplex — house
  • Dutch: duplexwoning — house
  • Finnish: paritalo — house
  • French: duplex — house
  • Georgian: დუპლექსი (duṗleksi) — house
  • German: Doppelhaus — house
  • Greek: διπλοκατοικία (diplokatoikía) — house
  • Italian: bifamiliare — house
  • Norwegian Bokmål: tomannsbolig — house
  • Norwegian Nynorsk: tomannsbustad — house
  • Polish: bliźniak — house
  • Spanish: dúplex — house
  • Swedish: parhus — house
  • Swedish: etagevåning — house
  • Finnish: duplex-leima — philately: double cancellation
  • French: flamme postale — philately: double cancellation
  • French: flamme — philately: double cancellation
  • French: duplex — juggling: throwing motion
  • Finnish: dupleksi — biology: double-stranded polynucleotide
Real reading context

duplex in complete knowledge articles