After all, what is science popularization? Explanation and a proposition of a plural concept

Abstract The term science popularization is an established nomenclature in policies and research studies that focus on the relationships between science and the public in Brazil. However, the multiplicity of means and players through which it operates, and of communication processes and intentionalities that guide it, require historical, political, theoretical, and linguistic boundaries. Communication, diffusion, dispersion, and dissemination are some terms that are sometimes considered different and, at other times, synonyms for popularization. This text proposes a reflection on this conceptual plurality, emphasizing the importance of improving the understanding of science popularization as a pedagogical and cultural effort, a set of social communication practices, an academic field of study, and a basis for public policies. Inspired by theoretical formulations by communicators and educators, we propose a definition considering five aspects: sources, players, vehicles/means, languages, and intentions of science popularization.