Abstract: The Breton language has a long history and nowadays the Breton lexicographic fund is very rich/and its lexicographical resources are now plentiful. Focusing on an exemplary situation, the Covid-19 pandemic, we propose to study how Breton speakers today exploit this heritage to meet the terminological challenges of the 21st century. While the Internet allows all speakers to access resources, social networks constitute a privileged vector of dissemination and participate in the process of standardization of the language.
