Medical Dictionary


noun hae·moph·i·lus \hē-ˈmäf-ə-ləs\

Medical Definition of haemophilus

  1. 1 capitalized :  a genus of nonmotile, gram-negative, rod-shaped bacteria of the family Pasteurellaceae that include several important pathogens (as H. influenzae associated with meningitis, pneumonia, conjunctivitis, and otitis media and H. ducreyi of chancroid)

  2. 2plural haemophili \-lē\play :  any bacterium of the genus Haemophilus Bacteria of the genus Haemophilus are parasitic on the mucous membranes of humans and other, mainly warm-blooded animals. They prefer aerobic conditions but are also capable of living under anaerobic conditions. —see hib

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