Definitions of acculturate on the Web:

assimilate culturally
wordnet.princeton.edu/perl/webwn


a policy used by the Bureau of Indian Affairs to destroy Aboriginal Indigenous communities, specifically by replacing Aboriginal Indigenous language, culture, and values with Euro-American ones.
www.maquah.net/We_Have_The_Right_To_Exist/WeHaveTheRight_26Glossary.html


Acculturation is the obtainment of culture by an individual or a group of people. The term originally applied only to the process concerning a foreign culture, from the acculturing or accultured recipient point of view, having this foreign culture added and mixed with that of his or her already existing one acquired since birth.
en.wikipedia.org/wiki/Acculturate