| genus listeria | (n) a genus of aerobic motile bacteria of the family Corynebacteriaceae containing small Gram-positive rods |
| listeria | (n) any species of the genus Listeria |
| listeria monocytogenes | (n) the type species of the genus Listeria; can cause meningitis, encephalitis, septicemia, endocarditis, abortion, abscesses, listeriosis, Syn. L. monocytogenes |
| listeriosis | (n) an infectious disease of animals and humans (especially newborn or immunosuppressed persons) caused by the bacterium Listeria monocytogenes; in sheep and cattle the infection frequently involves the central nervous system and causes various neurological symptoms, Syn. listeria meningitis |
