module

The word “module” means a self-contained, often interchangeable part of a larger system. In plain terms, a self-contained piece or unit of a larger system — used for software, education, spacecraft, and more.

“Module” is pronounced MOD-yool (/ˈmɑd͡ʒul/ in IPA).

Here is “module” used in a sentence: “Each module of the course covers a different topic.”

“Module” is a noun.

The word “module” comes from Latin. Borrowed from French module, from Latin modulus ("a small measure"), a diminutive of modus ("measure") — the same root as "mode" and "model.".

“Module” is a fairly common word in modern English.

“Module” has 2 distinct senses listed in this dictionary. The most common is: a self-contained, often interchangeable part of a larger system.

A component is any individual part of a system, while a module is a self-contained, often interchangeable unit that groups related parts and functions together. Modules are designed to work independently and can usually be swapped or reused within a larger system.

In spaceflight, a module is an independent, self-contained section of a spacecraft, such as a command module or lunar module. Each module performs specific functions and can sometimes separate from or dock with the rest of the craft.

A modular system is one built from separate modules—self-contained, interchangeable parts—that can be combined, replaced, or rearranged. This design makes systems easier to build, upgrade, and repair, because a single module can be changed without affecting the whole.

In software, a module is a self-contained section of code that performs a specific function and can be reused or combined with other modules to build a larger program. This reflects the general sense of a module as an interchangeable part of a larger system.