module

noun

mod·​ule ˈmä-(ˌ)jül 

1

: a standard or unit of measurement

2

: the size of some one part taken as a unit of measure by which the proportions of an architectural composition are regulated

3

a

: any in a series of standardized units for use together: such as

(1)

: a unit of furniture or architecture

(2)

: an educational unit which covers a single subject or topic

b

: a usually packaged functional assembly of electronic components for use with other such assemblies

the subwoofer module

4

: an independently operable unit that is a part of the total structure of a space vehicle

5

a

: a subset of an additive group that is also a group under addition

b

: a mathematical set that is a commutative group under addition and that is closed under multiplication which is distributive from the left or right or both by elements of a ring and for which a(bx) = (ab)x or (xb)a = x(ba) or both where a and b are elements of the ring and x belongs to the set

Examples of module in a Sentence

factories that build engines, transmissions, brakes, and other modules for cars

a memory module for storing information

Recent Examples on the Web

Over the last decade, solar module production has surged 12-fold, Ember’s report noted. —Laura Paddison, CNN Money, 11 Feb. 2026

Future-ready power plants Rolls-Royce’s Modular Engine Power Plants (MEPP) deliver flexible power generation from 5 MW to 150 MW using standardised mtu engine-generator modules. —Jijo Malayil, Interesting Engineering, 10 Feb. 2026

Unlike modern probes that descend on landing legs, Luna 9 jettisoned its orientation modules during descent and fired a braking engine. —Ilya Ferapontov, Scientific American, 5 Feb. 2026

In addition, the federal agency says Chrysler is calling back certain Mopar tow trailer modules that also have trailer tow modules with trailer lights that may not light up and trailer brakes that may fail. —February 5, CBS News, 5 Feb. 2026

Word History

Etymology

Latin modulus

First Known Use

circa 1628, in the meaning defined at sense 1

Phrases Containing module

• command module
• lunar module
• service module

Rhymes for module

• nodule

Kids Definition

module

noun

mod·​ule ˈmäj-ü(ə)l 

1

a

: any in a series of similar units for use together

b

: a usually packaged collection of parts (as for an electronic device)

2

: an independent unit of a space vehicle

a propulsion module