biodomain/ˈbaɪ.oʊ.doʊˌmeɪn/biodomain means A biological domain. Lexicurio rates it Sui generis — a strength score of 87 out of 100.biodomain is pronounced /ˈbaɪ.oʊ.doʊˌmeɪn/.EtymologyFrom bio- + domain.nounA biological domain.