epizootic /ɛpɪ.zəˈwɒtɪk/adjective 3noun 3forms 3 adjective3 •Like or having to do with an epizootic: a widespread outbreak of disease among nonhuman animals.Epizootic plague occurred in the mice following introduction of rats from Europe. •Relating to epizoa; epizoic. •(rare) Containing fossils.Hence their primary division is into primeval and secondary or Epizootic. And the epizootic mountains are still farther distinguishable into original and derivative. — 1799 noun3 •An occurrence of a disease or disorder in a population of non-human animals at a frequency higher than that expected in a given time period.At the same time as an epidemic of the flu broke out among the people, an epizootic of the swine flu broke out among their pigs. •A particular epizootic disease. •[in the plural] (dialect, humorous) A disease or ailment (of humans).Johnny's not doing so well today, I think he caught the epizootic. formsepizootics · more epizootic · most epizootic