Module

A module is a self-contained component of a system, which has a well-defined interface to the other components; something is modular if it is constructed so as to facilitate easy assembly, flexible arrangement, and/or repair of the components.

Computers,

• Module (programming), computer program structuring.
• Module (Linux), object code loadable into the Linux kernel.
• Module file (.mod), various computer file formats for music.

Mathematics,

• Module (mathematics), in abstract algebra, a set with addition and multiplication.
• Modular form, in mathematics, certain analytic functions, used in number theory.
• Modular representation theory, in mathematics, representing groups using complex numbers called characters.

Other,

• Modularity (programming), the idea of modularity in computers, biology and cognition.
• Modularity of mind, hypothesized modules in mental processes.
• Sound module, electronic musical instrument without a human interface.
• Vitruvian module, in architecture, the semidiameter of a column at its base.
• Scenario or adventure, in role-playing games.