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  • triplex
    triplex
    adjective
    threefold; triple.
  • Triplex
    Triplex
    noun
    a laminated safety glass, as used in car windows
Synonyms

triplex

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

adjective

  1. threefold; triple.


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

"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

triplex 2 British  
/ ˈtrɪplɛks /

adjective

  1. a less common word for triple

"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

Etymology

Origin of triplex

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


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

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

They tested the ticks for Powassan virus, comparing their new triplex PCR method to the standard, commercially available Luminex xMap technology.

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

“He was aware that the Triplex apartment in which he, a real estate mogul and self-identified expert, resided for decades was not 30,000 square feet, but actually 10,996 square feet,” the judge said.

From Seattle Times ● Feb. 17, 2024

Your article . . . reviewing the annual New York Automobile Show mentions the fact that most high priced and many medium priced cars are using either Duplex or Triplex or non-shatterable glass.

From Time Magazine Archive

Triplex and Duplex safety glass appear in almost every expensive car and in the windshields of cheaper makes.

From Time Magazine Archive

The large Triplex plant at Clifton, N. J., will be resold to Pittsburgh Plate Glass Co. which will be given manufacturing licenses, will share Triplex's big Ford windshield contract with Libbey-Owens-Ford.

From Time Magazine Archive

She had been really intimate with Julia Triplex, and had been sympathetic when a brilliant marriage had been achieved. 

From The Way We Live Now by Anthony Trollope

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