This three-parts glossary has been created in the frame of the wider project EcoNAOS that focused on the curation, valorization and sharing of a 50-years long database of abiotic, phyto- and zoo-plankton observations collected during oceanographic cruises in the Norther Adriatic Sea. From this project several outputs have been published: the database, a data paper, the code used to harmonize data, the workflow, the research ideas. This glossary comes from an effort made by the author to facilitate the introduction of new themes and terms in an heterogeneous research group compsed from Ecologists and IT experts. The first part regards the Openness: concepts and applications tied to Open Science principles. The second part concerns Open Geospatial and Geospatial Standards, useful in the FAIRification process of data. The third part deals, more broadly, with some Technical concepts that a researcher may encounter while opening scientific data. The result is a easy, ready to use and handy glossary that facilitate the dialogue between ecologists and IT scientists in the FAIRification process of scientific data.