Resumen: Scientific communication is exploiting innovative dynamics of research dissemination and knowledge transfer through digital platforms which allow for the wide circulation of disciplinary information for diversified audiences. Against this backdrop, recontextualisation is a key phenomenon, enhanced by medium-dependent affordances, the combination of semiotic modes and users’ discursive choices. In this paper, we present and justify the SciDis Database, collected to analyse this complex phenomenon in various digital scientific dissemination practices, including X/Twitter and Instagram posts, research digests, feature articles, Ask-an-Expert sites, The Conversation platform, explainers, and lay summaries. We conceptualise each of them, considering two parameters to frame them: whether they represent web-hosted or social media practices, and whether they entail author-generated or writer-mediated knowledge. Exploitations and applications of the SciDis Database are emphasised in connection with digital discourse analysis and digital pragmatics, multimodally-oriented approaches, knowledge communication frameworks, and ethnographically-informed studies. Idioma: Inglés DOI: 10.58859/rael.v23i1.649 Año: 2025 Publicado en: Revista electrónica de lingüística aplicada 23, 1 (2025), 101-118 ISSN: 1885-9089 Financiación: info:eu-repo/grantAgreement/ES/DGA/H16-23R Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2021-122303NB-I00 Tipo y forma: Artículo (Versión definitiva) Área (Departamento): Área Filología Inglesa (Dpto. Filolog.Inglesa y Alema.)