bactericidin

noun
bac·​te·​ri·​cid·​in | \ bak-ˌtir-ə-ˈsīd-ᵊn How to pronounce bactericidin (audio) \
variants: or bacteriocidin \ -​ˌtir-​ē-​ə-​ˈsīd-​ How to pronounce bacteriocidin (audio) \

Medical Definition of bactericidin

: a bactericidal antibody

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