English Reference

Word

modular

Phoneticsmod·u·lar, stress on the first syllable

US/ˈmɑdʒəɫɝ/

UK/mˈɒdjʊlɐ/

Definitions

01made of separate parts

B2 · Upper Intermediate

adj. made of separate parts or units that can be joined together in different ways.

adj. composed of standardized units or sections that allow for easy assembly, repair, or reconfiguration.

“We bought a modular sofa so we could change the layout of our living room later.”

“The architect proposed a modular housing system, allowing residents to add or remove rooms as their family needs evolved over time.”

02software or hardware design

C1 · Advanced Computing Technical

adj. describes computer programs or machines made of independent pieces that work together.

adj. relating to a design approach where a system is divided into smaller parts that can be independently created and used in different systems.

“Modular software is easier to fix because you can update one part without breaking the rest.”

“By adopting a modular architecture, the development team ensured that individual components could be tested in isolation before being integrated into the primary codebase.”

Usage

Often used to describe code architecture or hardware components like power supplies.

Synonyms

component-based

Antonyms

03mathematical systems

C2 · Proficiency Mathematics Technical

adj. relating to a type of math where numbers wrap around after reaching a certain value, like a clock.

adj. relating to or based on a modulus, typically involving arithmetic where numbers reset after reaching a specific value.

“Clock time is a simple example of modular arithmetic because it resets after twelve.”

“Modular arithmetic serves as the foundational logic for many modern encryption algorithms used to secure digital communications.”

Usage

Commonly appears in the phrase 'modular arithmetic'.

Real-World Examples

“From modular home setups to open development kits that let anyone with silver-ball dreams try their hand at game design, there was something for everyone.”
Ars Technica 21 Oct 2026
“In June, the charity also took the keys to eight one-bedroom modular "pods", which were gifted by the Hill Group, an Essex-based developer.”
BBC News 13 Sept 2026

Etymology

From module + -ar.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

ADJECTIVE

modular(B2)

Domain

Mathematics

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Frequent
Level
B2 · Upper Intermediate
Updated

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English Reference