an act or instance of combining into an integral whole.

an act or instance of integrating a racial, religious, or ethnic group.

an act or instance of integrating an organization, place of business, school, etc.

Mathematics . the operation of finding the integral of a function or equation, esp. solving a differential equation.

behavior, as of an individual, that is in harmony with the environment.

Psychology . the organization of the constituent elements of the personality into a coordinated, harmonious whole.

Genetics . coadaptation ( def. 2 ) .

noun

combination , amalgamation , assimilation , alliance , mixture , synthesis , union , desegregation