noun🔗ShareListeriaAny rod-shaped, gram-positive bacterium, of the genus Listeria, especially those responsible for the bacterial infection listeriosis."The food safety inspector found Listeria bacteria in the school's salad bar, so they had to close it down. "El inspector de seguridad alimentaria encontró bacterias Listeria en el bar de ensaladas de la escuela, por lo que tuvieron que cerrarlo.organismmicroorganismdiseasemedicinebiologyChat with AIVocabulary GamePractice Reading