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modular

American  
[moj-uh-ler] / ˈmɒdʒ ə lər /

adjective

  1. of or relating to a module or a modulus.

  2. composed of standardized units or sections for easy construction or flexible arrangement.

    a modular home; a modular sofa.

  3. Mathematics. (of a lattice) having the property that for any two elements with one less than the other, the union of the smaller element with the intersection of the larger element and any third element of the lattice is equal to the intersection of the larger element with the union of the smaller element and the third element.

  4. Computers. composed of software or hardware modules that can be altered or replaced without affecting the remainder of the system.


noun

  1. something, as a house or piece of furniture, built or organized in self-contained units or sections.

  2. a self-contained unit or item, as of furniture, that can be combined or interchanged with others like it to create different shapes or designs.

modular British  
/ ˌmɒdjʊˈlærɪtɪ, ˈmɒdjʊlə /

adjective

  1. of, consisting of, or resembling a module or modulus

"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

Other Word Forms

Etymology

Origin of modular

From the New Latin word modulāris, dating back to 1790–1800. See module, -ar 1

Explanation

Use the adjective modular to describe something that is made up of pieces or parts, like a gerbil's habitat of tubes and cages, or a new house that is delivered in sections and then assembled. Things like houses, cars, airplanes, and computers are all often constructed in a modular way. Rather than being built all at once, they are built in separate parts that get assembled into a finished product. The word modular has been used this way since the 1930s — earlier, it was a purely mathematical term, from the Latin word modulus, or "small measure."

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Vocabulary lists containing modular

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.

The modular couch is anchored on each side with Art-Deco influenced side tables, lamps and light blue slipper chairs he designed, setting up a cozy tableau for hosting his friends.

From Los Angeles Times • Jun. 26, 2026

Super Micro’s AI business centers around its modular DCBBS, which takes Nvidia’s newest chips and slots them into its customizable server components.

From MarketWatch • Jun. 22, 2026

This new small worker city—rows of modular units and RV spaces—could rise minutes from the Bison Crossing neighborhood, where the Higginses live.

From The Wall Street Journal • Jun. 9, 2026

Rigetti favors a modality called superconducting quantum, building modular, multi-chip processors and operating them at near-absolute zero temperatures.

From Barron's • Jun. 9, 2026

Admin is a single-level modular prefab building with wide gray paneling and a flat white roof.

From "Internment" by Samira Ahmed

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