The act or state of sticking together; close union.

That from of attraction by which the particles of a body are united throughout the mass, whether like or unlike; -- distinguished from adhesion, which unites bodies by their adjacent surfaces.

unity of a linguistic sequence or chain, defined in terms of its internal semantic relations.

Mutual attraction by which the elements or particles of a body or substance are held together.

The extent to which a system or a subsystem performs a single function.

The extent to which a system unit--subroutine, program, module, component, subsystem--performs a single dedicated function. Generally, the more cohesive are units, the easier it is to maintain and enhance a system, since it is easier to determine where and how to apply a change.

The degree to which the tasks performed by a single program module are functionally related. Contrast with coupling.

The cohesion of a group of program elements (e.g. statements in a method or methods and variable declarations in a class definition) is the degree to which the elements in the group are directed at a single purpose.