bi ‧ o ‧ se ‧ cu ‧ ri ‧ ty /ˌbaɪəʊsɪˈkjʊərəti, ˌbaɪəʊsɪˈkjʊərɪti $ ˌbaɪoʊsɪˈkjʊr-/ BrE AmE noun [uncountable]
things that are done to prevent diseases from spreading between people, animals, or crops:
Poultry producers have started to adopt strict biosecurity measures.