What term refers to the process of making similar or causing to resemble?

The term "assimilate" indeed refers to the process of making something similar or causing it to resemble something else. In various contexts, such as in social sciences or biology, assimilation denotes the process where new information, experiences, or individuals blend into an existing system or group, often leading to a unified or uniform characteristic.

For instance, in cultural contexts, assimilation can refer to how individuals or groups adopt the customs and attitudes of a prevailing culture, thereby becoming more alike. Similarly, in chemistry or data processing, assimilation can describe how components are integrated into a larger whole, achieving a state of homogeneity.

Thus, when discussing the concept of bringing things together to become more alike, "assimilate" captures this idea effectively, making it the correct choice for describing the process of making similar or causing to resemble.