Entry 1 sense Webster, 1913 Bactericide /(băk*tē"rĭ*sīd)/ · Bac·te·ri·cide · IPA /bækˈtɪəɹ.ɪˌsaɪd/ 01 n. Same as Germicide. 1. Same as Germicide.(Biol.) See: Germicide