to bring into close association or connection: The research center is affiliated with the university.
to attach or unite on terms of fellowship; associate (usually followed by with in U.S. usage, by to in Brit. usage): to affiliate with the church.
to trace the descent, derivation, or origin of: to affiliate a language.
Law. to fix the paternity of, as an illegitimate child: The mother affiliated her child upon John Doe.