module

US /ˈmɑː.dʒuːl/
UK /ˈmɑː.dʒuːl/
"module" picture
1.

each of a set of standardized parts or independent units that can be used to construct a more complex structure, such as an item of furniture or a building

:
The new office building is constructed from prefabricated modules.
Each furniture piece is a separate module that can be combined.
2.

a self-contained assembly of electronic components and circuitry, such as a removable circuit board

:
The computer's memory module needs to be upgraded.
He inserted the new expansion module into the server.
3.

a distinct unit of a course or program of study

:
This course consists of five different modules.
Students must complete all core modules to graduate.