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Ca·lym·ma·to·bac·te·ri·um | \ kə-ˌlim-ət-ō-bak-ˈtir-ē-əm 
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\Medical Definition of Calymmatobacterium
: a former genus of bacteria consisting of a single species (C. granulomatis) that is the causative agent of granuloma inguinale and is now classified in the genus Klebsiella (K. granulomatis) — see donovan body
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