Added 9 October 2026 listeriosis noun Categories: Describing WordsRare Words noun ! Definition from WordNet 3.1, Princeton University. More about listeriosis at Wordnik → Where our words come from → 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. Related Words: listeriabacterialisterellosislisteriophageleprosyleptoclostridiosis Back to today's word