In sociology, the concept of assimilation refers to the process through which individuals or groups adopt the cultural norms, values, and practices of a dominant or host society. It involves the integration of newcomers into the social fabric of a society, resulting in a sense of belonging and identification with the larger community.

Assimilation is the process through which individuals or groups of differing ethnic heritage are absorbed into the dominant culture of a society. It involves the adoption of the cultural norms of the dominant or host culture, to the point where the assimilating group becomes indistinguishable from that culture.

Assimilation, sometimes known as integration or incorporation, is the process by which the characteristics of members of immigrant groups and host societies come to resemble one another. That process, which has both economic and sociocultural dimensions, begins with the immigrant generation and continues through the second generation and beyond.

Assimilation is the cognitive process of making new information fit in with your existing understanding of the world. Essentially, with assimilation, when you encounter something new, you process and make sense of it by relating it to things you already know.

The process of assimilating involves taking on the traits of the dominant culture to such a degree that the assimilating group becomes socially indistinguishable from other members of the society. As such, assimilation is the most extreme form of acculturation.