The quality of being interactive.
the process of two people or things working together and influencing each other
‘distance learning systems with high levels of interactivity with the teacher’; ‘improved interactivity between companies’;
the ability of a computer to respond to a user's input
‘a programming language that you can use to add interactivity to your web pages’;
Across the many fields concerned with interactivity, including information science, computer science, human-computer interaction, communication, and industrial design, there is little agreement over the meaning of the term , but most definitions are related to interaction between users and computers and other machines through a user interface. Interactivity can however also refer to interaction between people.