definition assimilation
Definition of Assimilation. Assimilation is a gradual process by which a person or group belonging to one culture adopts the practices of another, thereby becoming a member of that culture. Sociologists commonly distinguish between forced and unforced assimilation. In forced assimilation, a person or group is compelled to take on the practices of another culture, such as by adopting that culture's language and religious traditions. In unforced assimilation, a person takes on the practices of another culture but is not forcibly compelled to do so.