triplex

1 of 2

noun

tri·​plex ˈtri-ˌpleks  ˈtrī- 

: something (such as an apartment) that is triplex

triplex

2 of 2

adjective

1

: threefold, triple

triplex windows

2

: having three apartments, floors, or sections

triplex buildings

triplex apartments

a triplex theater

Synonyms of triplex

Adjective

• triple

Examples of triplex in a Sentence

Adjective

a triplex house that features a separate apartment on each floor

Recent Examples on the Web

Noun

Through a series of renovations it’s morphed from a one-bedroom apartment to a sophisticated NoHo triplex with a rooftop chicken coop, adjusting to major life milestones, such as the birth of Scherieber’s third child, Hazel Bee. — Tanya Fevzi, CNN Money, 10 Sep. 2026

Record-breaking Brooklyn home The Oppenheimer actor’s pad in the Big Apple is a massive penthouse triplex in The Standish, a luxury building in Brooklyn Heights. — Katie Schultz, Architectural Digest, 24 July 2026

Adjective

In Rio’s famed Ipanema neighborhood, this triplex penthouse, which sits within a building designed by the late, great Oscar Niemeyer, stretches across three levels with postcard-ready views of both the ocean and Sugarloaf Mountain. — Natalie Hoberman, Forbes.com, 16 May 2026

Per the listing, held by Emily Beare and Lexi Alper of CORE Real Estate, the triplex could be reimagined by a developer or used as a single residence. — Wendy Bowman, Robb Report, 10 Apr. 2026

Word History

Etymology

Adjective

Latin, from tri- + -plex -fold — more at -fold

First Known Use

Noun

1571, in the meaning defined above

Adjective

1655, in the meaning defined at sense 1

Rhymes for triplex

• annex
• annexe
• apex
• aztecs
• carex
• codecs
• codex
• convex
• cusecs
• duplex
• execs
• fedex

Kids Definition

triplex

1 of 2 adjective

tri·​plex ˈtrip-ˌleks  ˈtrī-ˌpleks 

: triple entry 3 sense 2

triplex

2 of 2 noun

: something that has three parts (as an apartment with three floors)