Which prefix means "between; among"?

The prefix that means "between; among" is "inter." This prefix is derived from Latin and is commonly used in various words to indicate a relationship or interaction occurring between entities. For instance, in the term "international," "inter" signifies something that occurs between nations. This establishes a clear understanding of how "inter" is associated with processes, relationships, or actions that involve multiple parties or elements working together or in relation to one another.

In contrast, the prefix "intra" means "within" or "inside," which refers to something confined to a singular entity, while "sub" denotes "under" or "beneath," indicating a position that is lower than another. The prefix "post" refers to "after," denoting a time-related aspect rather than a relational one. Understanding these distinctions highlights why "inter" is appropriately the prefix that conveys the idea of being "between" or "among."