amphivorous,a.|æmˈfɪvərəs| [f.Gr. ἀµϕί both + L. -vorus devouring, eating; cf.omnivorous.] Eating both animal and vegetable food; omnivorous. a1870Mapother Anim.Phys. 6 Animals, according to their food, may be divided into herbivorous, like the cow; carnivorous, like the lion; and amphivorous, like man.