NEO4MAT (Nuclear Energy Ontology for MATerials) contributes to the realisation of the CONNECT-NM RL1 objectives thanks to a multidisciplinary consortium that can support the development and implementation of NM-KOS components for a selected set of nuclear materials related application cases. Activities will span form the creation of NM-DMS for each application case, up to their virtualisation into a federated NM-KB, including the development of dedicated EMMO based ontologies, focusing on reusable methodologies by other RLs