Porphyromonas is a genus of Gram-negative, anaerobic bacteria commonly found in the human oral cavity and associated with periodontal disease. It comprises several species known for pink-pigmented colonies; the name combines Greek roots referencing the color purple and microbial classification. In medical microbiology, Porphyromonas is studied for its role in biofilms, virulence factors, and interactions with host tissues.
Full pronunciation guide
