plural noun, singular en·ter·o·bac·te·ri·um [en-tuh-roh-bak-teer-ee-uh m] /ˌɛn tə roʊ bækˈtɪər i əm/.

  1. rod-shaped Gram-negative bacteria of the family Enterobacteriaceae, as those of the genera Escherichia, Salmonella, and Shigella, occurring normally or pathogenically in the intestines of humans and other animals, and the genus Erwinia, occurring in plants.

noun plural -ria (-rɪə)

  1. any of a class of Gram-negative rodlike bacteria that occur in the gastrointestinal tract

n. pl. en•ter•o•bac•ter•i•a (-ē-ə)

  1. Any of various gram-negative rod-shaped bacteria of the family Enterobacteriaceae that includes some pathogens of animals, such as the colon bacillus and salmonella.
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