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    Col·i·form bac·te·ri·um
    /ˌkōləfôrm ˌbakˈtirēəm/

    noun

    • 1. a rod-shaped bacterium, especially Escherichia coli and members of the genus Aerobacter, found in the intestinal tract of humans and other animals. Its presence in water indicates fecal contamination and can cause diarrhea and other dysenteric symptoms.