triplex

American  

[trip-leks, trahy-pleks] / ˈtrɪp lɛks, ˈtraɪ plɛks /

adjective

1. threefold; triple.

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noun

1. something triple.

2. Music. triple time.

3. an apartment having three floors.

4. a multiplex of three theaters or movie houses.

Triplex ¹ British  

/ ˈtrɪplɛks /

noun

1. a laminated safety glass, as used in car windows

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triplex ² British  

/ ˈtrɪplɛks /

adjective

1. a less common word for triple

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Etymology

Origin of triplex

1595–1605; < Latin triplex (stem triplic- ) threefold, equivalent to tri- tri- + -plex -plex

Example Sentences

Described in its listing as a “modernist masterpiece,” the triplex unit spans exactly 11,000 square feet and features an incredible double-height living room with walls of windows that overlook the Hudson River.

From MarketWatch • Apr. 6, 2026

He has also bought a triplex, part of which he rents out to provide a source of income, and secured his green card for permanent US residency.

From Barron's • Dec. 20, 2025

Ivan Blackshear already rents to tenants with cats at his triplex in Chico, a small city north of Sacramento.

From Seattle Times • Apr. 18, 2024

And only 30 ticks tested positive using the Luminex method, demonstrating that the triplex technique has a higher sensitivity to detect the virus RNA.

From Science Daily • Mar. 26, 2024

Their apartment is a middle unit in a triplex.

From "All the Light We Cannot See" by Anthony Doerr