The author explores the concept of communication as a gesture consisting of a meaningful movement that creates relations and defines the space of interaction between people. He reconsiders the roots of the study of communication in rhetoric, linguistics, semiotics, information theory, and cybernetics, to uncover the theoretical and methodological limitations and traditional assumptions about communication, including digital communication; shows that a more relational understanding of communication processes can be gathered from the relations among these roots; and reintegrates these theoretical and philosophical roots with more recent work in spatial cognition, interactional sociology, and ecological and relational psychology to present an account of communication based on the concept of gesture. He examines the study of digital media and discourse, the semiotics of cybernetics, the role of space in communication, rhetoric as the making of meaning, and the dimensions of interaction in communication. The book is an extended version of the author's dissertation.