"Dyadic interaction" refers to a social interaction or communication between two people. It involves a conversation, an exchange of ideas, or any form of direct interaction between two individuals. Full definition
An analysis of dyadic interactions of approximately 65,000 heterosexual users of an online dating system in the U.S. showed that, despite these differences, users of the system sought people like them much more often than chance would predict, just as in the offline world. (onlinepersonalswatch.com)
These differences may be understood in the light of gender differences in peer relationships, indicating that female rather than male adolescents tend to spend more time in dyadic interactions with their friends (for a review, see Rose and Rudolph 2006). (link.springer.com)
Even dyadic interactions between spouses are shaped directly and indirectly by social institutions, including economic and political systems that afford different privileges, opportunities, and resources to men and women. (academic.oup.com)